Twenty-three Formula 1 circuits: what makes each one distinctive, the corners that define a lap, and the numbers that go with them.
Lap lengths, turn counts, race distances and outright lap records are taken from official Formula 1 and FIA figures and cross-checked against independent sources. Where published figures disagree, and they often do, we say so in the entry rather than quietly picking the tidier number. Note that a lap record is the fastest lap set in a race, which is not the same as a qualifying pole lap, and the two are frequently confused.
Jump to a circuit
- Bahrain
- Jeddah
- Melbourne
- Suzuka
- Miami
- Imola
- Monaco
- Barcelona
- Montreal
- Red Bull Ring
- Silverstone
- Spa-Francorchamps
- Hungaroring
- Zandvoort
- Monza
- Baku
- Singapore
- COTA
- Mexico City
- Interlagos
- Las Vegas
- Lusail
- Abu Dhabi
Bahrain
Sakhir hosted the first Formula 1 Grand Prix ever held in the Middle East in 2004 and has run under floodlights as a night race since 2014. Its abrasive desert asphalt and heavy braking zones make tyre degradation among the highest on the calendar, which is why F1 uses the venue for pre-season testing.
Bahrain International Circuit runs to 5.412 km over 15 turns, taken clockwise. Race day is 57 laps, 308.238 km. It has been on the calendar since 2004. The outright lap record is 1:31.447, set by Pedro de la Rosa for McLaren in 2005.
Corners worth knowing
- Turn 1 (Michael Schumacher Corner) - heavy braking right-hander at the end of the main straight, renamed in 2014 and F1's classic Bahrain overtaking spot.
- Turn 10 - tight, downhill, off-camber left-hander widely regarded as the hardest corner on the lap.
Minimal - the desert layout is essentially flat, varying only a few metres, with the one notable drop being the downhill run into the off-camber Turn 10.
Race distance: formula1.com and the 2025 Bahrain GP record list 308.238 km, but 57 laps x the stated 5.412 km lap length arithmetically gives 308.484 km. The official 308.238 km figure is used here.
Jeddah
Jeddah is the fastest street circuit in Formula 1, with lap average speeds around 250 km/h, second only to Monza. It also has the most corners of any track on the calendar at 27, most of them blind, walled and taken flat out.
Jeddah Corniche Circuit runs to 6.174 km over 27 turns, taken clockwise. Race day is 50 laps, 308.45 km. It has been on the calendar since 2021. The outright lap record is 1:30.734, set by Lewis Hamilton for Mercedes in 2021.
Corners worth knowing
- Turns 22-23 - the blind, barrier-lined high-speed left-right sweep near the end of the lap, one of the fastest corner sequences on any street circuit.
- Turn 27 - the flat-out final right-hander that launches cars onto the main straight.
Race distance: the official figure is 308.450 km, while 50 laps x the stated 6.174 km lap length gives 308.700 km. The official 308.450 km figure is used here.
Melbourne
Albert Park is a temporary circuit laid out on public parkland roads around Albert Park Lake, and it has opened the Formula 1 season more often than any other venue in the modern era. The 2022 remodel removed the old Turn 9-10 chicane, creating a 1.3 km flat-out section and cutting several seconds off lap times.
Albert Park Circuit runs to 5.278 km over 14 turns, taken clockwise. Race day is 58 laps, 306.124 km. It has been on the calendar since 1996. The outright lap record is 1:19.813, set by Charles Leclerc for Ferrari in 2024.
Corners worth knowing
- Turns 9-10 - the fast left-right sweep created when the old chicane was removed in 2022, ending a 1.3 km flat-out run.
- Turn 1 - the tight right-hander off the main straight, a perennial first-lap flashpoint.
Circuit type: formula1.com describes Albert Park as a 'temporary facility' and Wikipedia calls it a street circuit; it is a temporary parkland/street hybrid rather than a permanent track. 'street' is used here.
Suzuka
Suzuka is the only figure-of-eight layout on the Formula 1 calendar, with the back section crossing over the main loop on an overpass. Designed by John Hugenholtz in 1962 as a Honda test track, it has decided more world championships than any other circuit, including the Senna-Prost collisions of 1989 and 1990.
Suzuka International Racing Course runs to 5.807 km over 18 turns, taken clockwise. Race day is 53 laps, 307.471 km. It has been on the calendar since 1987. The outright lap record is 1:30.965, set by Andrea Kimi Antonelli for Mercedes in 2025.
Corners worth knowing
- 130R - a near-flat-out left-hand kink taken at around 300 km/h.
- The Esses (Turns 3-7) - a rhythmic uphill high-speed snake that punishes any missed apex.
Notable - roughly 40 m of vertical change, climbing through the Esses and dropping away again towards Degner and Spoon.
Some secondary sources quote Max Verstappen's 2025 pole lap (1:26.983) as the 'lap record'; that is a qualifying time. The official outright race lap record is Antonelli's 1:30.965 (2025), as stated by formula1.com and Wikipedia.
Miami
Despite being called a street circuit, Miami uses no public roads: it is a purpose-built temporary track laid on and around the Hard Rock Stadium campus, crossing public roads rather than running along them. Its 2022 debut became infamous for a fake marina beside the Turn 7-8 complex, complete with real yachts parked on painted-on water.
Miami International Autodrome runs to 5.412 km over 19 turns, taken clockwise. Race day is 57 laps, 308.326 km. It has been on the calendar since 2022. The outright lap record is 1:29.708, set by Max Verstappen for Red Bull Racing in 2023.
Corners worth knowing
- Turns 14-15 chicane - an uphill-in, downhill-out flick tucked beneath the highway overpasses.
- Turn 17 - the heavy-braking left-hander onto the pit straight and a prime overtaking and error zone.
Almost entirely flat; the only meaningful gradient is the artificial uphill approach and downhill exit of the Turns 14-15 chicane under the highway flyovers.
Imola
Imola is one of only a handful of F1 circuits that run anti-clockwise, and the 1994 San Marino Grand Prix weekend here - in which Roland Ratzenberger and Ayrton Senna were killed - triggered the biggest safety overhaul in the sport's history. It returned to the calendar in 2020 and hosted its 32nd and, for now, final Grand Prix in 2025 before being replaced by Madrid for 2026.
Autodromo Internazionale Enzo e Dino Ferrari runs to 4.909 km over 19 turns, taken anticlockwise. Race day is 63 laps, 309.049 km. It has been on the calendar since 1980. The outright lap record is 1:15.484, set by Lewis Hamilton for Mercedes in 2020.
Corners worth knowing
- Tamburello - the flat-out left where Ayrton Senna was killed in 1994, since converted into a chicane.
- Acque Minerali - the downhill right-hander into a climbing left, one of the great old-school corners on the calendar.
Notable - the lap climbs from Tosa up through Piratella and Acque Minerali to the crest at Variante Alta, then plunges downhill through the Rivazza left-handers back to the start-finish straight.
Race distance: formula1.com lists 309.049 km while the Wikipedia 2025 Emilia Romagna GP page lists 309.051 km; 63 laps x the stated 4.909 km gives 309.267 km. The official 309.049 km figure is used here.
Monaco
Monaco has been on the Formula 1 World Championship calendar since its first season in 1950 and is the only race where cars run through a road tunnel, emerging at close to 290 km/h into the harbour chicane. It is the slowest, tightest circuit of the year and the one leg of motorsport's Triple Crown that F1 still visits.
Circuit de Monaco runs to 3.337 km over 19 turns, taken clockwise. Race day is 78 laps, 260.286 km. It has been on the calendar since 1950. The outright lap record is 1:12.909, set by Lewis Hamilton for Mercedes in 2021.
Corners worth knowing
- Fairmont Hairpin (formerly Loews) - the slowest corner in Formula 1, taken at walking-pace speed on full steering lock.
- Casino Square - the blind, crested left-right at the circuit's highest point.
Around 42 m between the lowest point at the harbour and the highest at Casino, with gradients of roughly 12 per cent.
Elevation change: formula1.com quotes 42 m between the lowest point (La Rascasse) and the highest (Casino); Wikipedia states the high section is 44 m above the lowest part. Both are approximations of the same figure.
Barcelona
For decades Barcelona was Formula 1's default winter test venue, so teams know it better than any other track on the calendar - which is why a car that is quick here is usually quick everywhere. The slow chicane bolted into the final sector in 2007 was removed for the 2023 race, restoring the original flat-out sweep through the last two corners.
Circuit de Barcelona-Catalunya runs to 4.657 km over 14 turns, taken clockwise. Race day is 66 laps, 307.236 km. It has been on the calendar since 1991. The outright lap record is 1:15.743, set by Oscar Piastri for McLaren in 2025.
Corners worth knowing
- Turn 3 (Renault) - a long, loaded fourth-gear right-hander that punishes any car short on front-end balance.
- Turn 9 (Campsa) - a blind, uphill-crested high-speed right taken close to flat.
Roughly 30 m across the lap, most obviously the climb to the blind crest at Campsa (Turn 9).
Race distance: both formula1.com and Wikipedia publish 307.236 km, but 66 laps x 4.657 km = 307.362 km. The official 307.236 figure appears to be a long-standing transposition in F1's own data; the published value is used here.
Montreal
The track sits on Ile Notre-Dame, an artificial island built in the St Lawrence for Expo 67 out of rock excavated from the Montreal Metro, and is almost perfectly flat - under two metres of elevation change over the lap. Its low-drag straights, brutal braking zones and unforgiving walls make it one of the calendar's highest-attrition races.
Circuit Gilles Villeneuve runs to 4.361 km over 14 turns, taken clockwise. Race day is 70 laps, 305.27 km. It has been on the calendar since 1978. The outright lap record is 1:13.078, set by Valtteri Bottas for Mercedes in 2019.
Corners worth knowing
- Wall of Champions (exit of the final chicane) - the concrete barrier that ended the races of Hill, Villeneuve and Schumacher in 1999.
- L'Epingle (Turn 10) - the tight hairpin that fires cars onto the longest straight of the lap.
Circuit type: Wikipedia's circuit article calls it a 'street circuit on an artificial island', while the 2026 Canadian Grand Prix article and Formula 1 describe it as a semi-permanent facility. Classified here as hybrid.
Red Bull Ring
At roughly 4.3 km and only 10 corners it is one of the shortest laps in Formula 1, so lap times dip into the 1m05s range and the entire field is routinely covered by around a second in qualifying. Almost the whole first half of the lap is spent climbing, with about 63 metres of elevation gain between the start line and Turn 2.
Red Bull Ring runs to 4.318 km over 10 turns, taken clockwise. Race day is 71 laps, 306.452 km. It has been on the calendar since 1970. The outright lap record is 1:05.619, set by Carlos Sainz for McLaren in 2020.
Corners worth knowing
- Turn 1 (Niki Lauda Kurve) - steep uphill blind right-hander onto the circuit's longest climb.
- Turn 3 (Remus) - heaviest braking zone on the lap and the prime overtaking spot.
63.5 m (F1.com); Wikipedia cites 65 m from lowest to highest point.
Lap record: formula1.com's 2025 circuit page and the current Wikipedia article list 1:07.924 by Oscar Piastri (McLaren, 2025) as the record, following a circuit re-measurement/layout re-designation that reset the books; the long-standing outright fastest F1 race lap at the venue remains 1:05.619 by Carlos Sainz (McLaren) at the 2020 Styrian Grand Prix. Sources disagree on which is the 'official' current record.
Silverstone
Silverstone staged the very first race of the Formula 1 World Championship on 13 May 1950, won by Giuseppe Farina for Alfa Romeo. Laid out on a former WWII bomber airfield, its wide, flat, fast layout makes the Maggotts-Becketts-Chapel sequence one of the highest-lateral-load stretches of track in the sport.
Silverstone Circuit runs to 5.891 km over 18 turns, taken clockwise. Race day is 52 laps, 306.198 km. It has been on the calendar since 1950. The outright lap record is 1:27.097, set by Max Verstappen for Red Bull Racing in 2020.
Corners worth knowing
- Maggotts-Becketts-Chapel - a flat-out high-speed S-sequence widely rated the best corner complex in F1.
- Copse - a fast right-hander taken at around 290 km/h.
11.3 m - one of the flattest circuits on the calendar.
Spa-Francorchamps
At 7.004 km Spa is by far the longest circuit on the Formula 1 calendar and has the biggest elevation change at over 102 metres, cutting through the Ardennes forest on a layout descended from public roads first used in 1921. Its microclimate is notorious: the lap is long enough that one end of the circuit can be soaked while the other stays dry.
Circuit de Spa-Francorchamps runs to 7.004 km over 19 turns, taken clockwise. Race day is 44 laps, 308.052 km. It has been on the calendar since 1950. The outright lap record is 1:44.701, set by Sergio Perez for Red Bull Racing in 2024.
Corners worth knowing
- Eau Rouge / Raidillon - a compression at the bottom of a dip followed by a blind uphill right on a 17% gradient.
- Pouhon - a long, fast downhill double-left taken close to flat out.
102.2 m between the lowest and highest points, the largest on the F1 calendar.
Turn count: 19 corners per Wikipedia and most guides; some lap-time databases list 20.
Hungaroring
Built in 1985, the Hungaroring hosted the first Formula 1 Grand Prix held behind the Iron Curtain in 1986. Its 14 mostly slow and medium-speed corners with almost no straights have earned it the nickname 'Monaco without the walls', where track position outweighs raw pace.
Hungaroring runs to 4.381 km over 14 turns, taken clockwise. Race day is 70 laps, 306.63 km. It has been on the calendar since 1986. The outright lap record is 1:16.627, set by Lewis Hamilton for Mercedes in 2020.
Corners worth knowing
- Turn 1 - a long downhill right-hand sweep into heavy braking, the circuit's main overtaking chance.
- Turn 4 - a fast downhill right-hander that sets up the twisting middle sector.
34.7 m - a gentle rise and fall, the circuit sits in a natural valley.
Elevation change: 34.7 m (formula1.com) vs approximately 36 m in some secondary sources.
Zandvoort
Zandvoort is the only circuit on the calendar with two banked corners - Hugenholtz at 19 degrees and the Arie Luyendyk final corner at 18 degrees, roughly double the banking at Indianapolis - added when the track returned to F1 in 2021 after a 36-year absence. The layout is threaded through North Sea sand dunes, giving it a rollercoaster character no modern purpose-built circuit matches.
Circuit Zandvoort runs to 4.259 km over 14 turns, taken clockwise. Race day is 72 laps, 306.587 km. It has been on the calendar since 1952. The outright lap record is 1:11.097, set by Lewis Hamilton for Mercedes in 2021.
Corners worth knowing
- Tarzanbocht (Turn 1) - a banked 180-degree right-hander at the end of the main straight, one of F1's classic overtaking spots.
- Arie Luyendyk (Turn 14) - the 18-degree banked final corner that lets cars accelerate flat onto the straight.
Undulating dune course with roughly 9 m of elevation change; Scheivlak drops away blind over a crest.
Race distance: formula1.com and the 2021 Dutch GP report 306.587 km, the 2026 Dutch GP article reports 306.592 km, and the Circuit Zandvoort Wikipedia infobox states 306.176 km. 72 x 4.259 km = 306.648 km. Used 306.587 km (formula1.com official figure).
Monza
Built in 1922 as the world's third purpose-built motor racing circuit and the oldest in Europe, Monza is one of only four venues from the inaugural 1950 World Championship still on the calendar. Lando Norris's 2025 record lap averaged 257.781 km/h - the fastest race lap ever run in a Formula One World Championship event.
Autodromo Nazionale Monza runs to 5.793 km over 11 turns, taken clockwise. Race day is 53 laps, 306.72 km. It has been on the calendar since 1950. The outright lap record is 1:20.901, set by Lando Norris for McLaren in 2025.
Corners worth knowing
- Curva Alboreto (the Parabolica) - a long, opening-radius right-hander taken flat onto the main straight.
- Variante Ascari - a fast left-right-left chicane complex named after Alberto Ascari.
Minimal - essentially flat, with only a gradual rise from the second Lesmo to Variante Ascari.
5.793 km x 53 laps = 307.03 km, slightly above the official published race distance of 306.720 km; the official figure is used, as F1 rounds the published lap length.
Baku
Baku pairs the calendar's narrowest corner - the 7.6 m Castle Section squeezed between medieval walls - with a 2.2 km flat-out run along Neftchilar Avenue, one of the longest full-throttle stretches in Formula 1. That collision of extremes makes it the sport's most reliable producer of late-race chaos and safety cars.
Baku City Circuit runs to 6.003 km over 20 turns, taken anticlockwise. Race day is 51 laps, 306.049 km. It has been on the calendar since 2016. The outright lap record is 1:43.009, set by Charles Leclerc for Ferrari in 2019.
Corners worth knowing
- Turn 8, the Castle Section - the narrowest point in Formula 1 at just 7.6 m wide, squeezing uphill past the old city walls.
- Turn 15 - the long left-hander that launches cars onto the 2.2 km main straight.
Notable - the lap climbs through the narrow old-town Castle Section (roughly Turns 7-12) before dropping back down to the seafront main straight.
First GP year 2016 is when the circuit debuted, but as the European Grand Prix; it has been branded the Azerbaijan Grand Prix since 2017.
Singapore
Marina Bay staged the first night race in Formula 1 history in 2008, run entirely under floodlights so European audiences could watch in daylight. Heat and humidity above 30C with almost no straight-line respite make it the calendar's most physically punishing race - drivers can lose around 3 kg of body weight over the distance.
Marina Bay Street Circuit runs to 4.927 km over 19 turns, taken anticlockwise. Race day is 62 laps, 305.337 km. It has been on the calendar since 2008. The outright lap record is 1:33.808, set by Lewis Hamilton for Ferrari in 2025.
Corners worth knowing
- Sheares (Turn 1) - the fast left-hander off the start straight that opens the lap.
- Memorial (Turn 7) - a tight left onto the Anderson Bridge, hard against the walls.
The brief specified the current layout as 4.940 km / 19 turns from the 2023 change. The circuit was modified again for 2025 (Turn 16 reprofiled), and the current layout is 4.927 km with 19 turns. Current-layout record: Lewis Hamilton, Ferrari, 1:33.808 (2025). The 2023-2024 4.940 km layout record was Daniel Ricciardo, RB, 1:34.486 (2024); the pre-2023 23-turn/5.063 km layout record was Lewis Hamilton, 1:41.905 (2018).
COTA
COTA was the first purpose-built Formula 1 facility in the United States, opened in 2012 after a four-year absence of a US Grand Prix. Its layout deliberately quotes other circuits - Silverstone's Maggotts-Becketts, Istanbul's Turn 8 and Hockenheim's stadium bends - inside one anticlockwise lap.
Circuit of the Americas runs to 5.513 km over 20 turns, taken anticlockwise. Race day is 56 laps, 308.405 km. It has been on the calendar since 2012. The outright lap record is 1:36.169, set by Charles Leclerc for Ferrari in 2019.
Corners worth knowing
- Turn 1 'Big Red' - a blind uphill left-hander approached on a gradient of over 11 percent.
- Turns 3-6 - a high-speed esses sequence modelled on Silverstone's Maggotts-Becketts-Chapel.
41 m (133 ft), most of it in the climb from the grid to the Turn 1 crest.
Mexico City
At roughly 2,240 m altitude the thin air forces teams to run near-maximum Monaco-style wings just to generate normal downforce, which paradoxically produces some of the highest top speeds of the year - 363 km/h was recorded on the start/finish straight in 2025. The circuit is named for brothers Ricardo and Pedro Rodriguez, both of whom died racing.
Autodromo Hermanos Rodriguez runs to 4.304 km over 17 turns, taken clockwise. Race day is 71 laps, 305.354 km. It has been on the calendar since 1963. The outright lap record is 1:17.774, set by Valtteri Bottas for Mercedes in 2021.
Corners worth knowing
- Peraltada (Turn 17) - the banked final corner, now only partly used since the stadium section was inserted.
- Foro Sol stadium section (Turns 12-14) - a slow left-right that threads through a packed baseball stadium.
The whole circuit sits about 2,240 m above sea level - by far the highest venue on the F1 calendar, with only around 78 percent of sea-level oxygen.
Altitude is given as 2,238 m by Wikipedia and as 2,240 m by Formula 1 and team sources; the difference is negligible and ~2,240 m is used here.
Interlagos
One of only a handful of anticlockwise circuits in Formula 1, Interlagos is short, bumpy and steeply undulating, and its final sector loads drivers' necks the wrong way for a full race distance. It has produced some of the sport's most charged finishes, from Senna's 1991 home win with his gearbox stuck in sixth to the 2008 title decided at the last corner of the last lap.
Autodromo Jose Carlos Pace (Interlagos) runs to 4.309 km over 15 turns, taken anticlockwise. Race day is 71 laps, 305.879 km. It has been on the calendar since 1973. The outright lap record is 1:10.540, set by Valtteri Bottas for Mercedes in 2018.
Corners worth knowing
- S do Senna (Turns 1-2) - the downhill left-right braking zone into the lap, and the circuit's classic overtaking spot.
- Juncao (Turn 12) - the uphill left-hander that launches one of the longest full-throttle runs on the calendar.
Notable - around 40 m of elevation change across a hilly, bowl-shaped site, with a long uphill drag from Juncao to the start/finish line.
Las Vegas
A floodlit street race run down the Las Vegas Strip itself, its 1.92 km main straight makes it one of the fastest street circuits F1 has ever used - Verstappen's 2025 record lap averaged 239.1 km/h. The 2023 debut nearly unravelled when opening practice was red-flagged within ten minutes after a loose water-valve cover destroyed Carlos Sainz's Ferrari, pushing second practice to a 2:30am start.
Las Vegas Strip Circuit runs to 6.201 km over 17 turns, taken anticlockwise. Race day is 50 laps, 309.958 km. It has been on the calendar since 2023. The outright lap record is 1:33.365, set by Max Verstappen for Red Bull Racing in 2025.
Corners worth knowing
- The Strip Straight (Turns 12-14) - a 1.92 km blast down Las Vegas Boulevard past the Bellagio, Caesars Palace and the Venetian; the circuit has no officially named corners, so this is its signature section.
- The Sphere complex (Turns 6-9) - the technical sequence that loops around the MSG Sphere before the run down Sands Avenue.
We do not currently make this circuit. Custom layouts are built to order.
Lusail
Built in 2004 as a MotoGP venue and floodlit since 2008 (then the largest permanently lit sports facility in the world), Lusail was drafted into F1 at short notice in 2021 and resurfaced with new kerbs and safety zones for its 2023 return. Its relentless high-speed corners punish tyres and drivers alike - the 2023 race left several competitors with heat exhaustion and forced the FIA to mandate driver-cooling measures.
Lusail International Circuit runs to 5.419 km over 16 turns, taken clockwise. Race day is 57 laps, 308.611 km. It has been on the calendar since 2021. The outright lap record is 1:22.384, set by Lando Norris for McLaren in 2024.
Corners worth knowing
- Turns 12-13-14 - the circuit has no widely-recognised named corners; its signature is this flowing triple right-hand sweep taken in fourth or fifth gear, one of the fastest corner sequences on the calendar.
- The 1.068 km main straight into Turn 1 - the principal overtaking zone and the fastest point on the lap.
RacingCircuits.info rounds the Grand Prix layout to 5.400 km; the official/FIA figure used by F1 and Wikipedia is 5.419 km.
We do not currently make this circuit. Custom layouts are built to order.
Abu Dhabi
Yas Marina staged Formula 1's first day-to-night race in 2009 and is one of the few anticlockwise circuits on the calendar, running past a working marina and under a colour-shifting hotel. It was rebuilt for 2021 - cut from 21 corners to 16, with a banked Turn 9 and a faster marina section - and that same season delivered the sport's most contentious finale, the Hamilton-Verstappen title decided on the last lap after a disputed safety car restart.
Yas Marina Circuit runs to 5.281 km over 16 turns, taken anticlockwise. Race day is 58 laps, 306.183 km. It has been on the calendar since 2009. The outright lap record is 1:25.637, set by Kevin Magnussen for Haas in 2024.
Corners worth knowing
- North Hairpin (Turn 5) - the widened, reprofiled hairpin at the end of the long back straight, the circuit's prime overtaking spot.
- The Hotel section - the closing corners that thread beneath the W Abu Dhabi (formerly Yas Viceroy) hotel, whose LED shell changes colour above the cars.
10.7 m (35 ft).
formula1.com's Yas Marina circuit information page still displays the pre-2021 configuration: 5.554 km, 55 laps, 305.355 km race distance and a lap record of 1:39.283 by Lewis Hamilton (2019). Those figures are superseded by the 2021 reconfiguration; Wikipedia plus the 2024 and 2025 race results confirm 5.281 km / 16 turns / 58 laps / 306.183 km and Magnussen's 1:25.637.
About these track maps
We make circuit layouts as wall art in two forms. The NEON LED versions light up and ship with a touch remote for brightness and colour. The mirror acrylic versions, in gold, silver and bronze, are not lit; they catch whatever light is already in the room. Three sizes: 9 inch for a desk, 24 inch for a wall, 32 inch as a statement piece.