A quadriga (Latin quadri-, four, and iugum, yoke) is a car or chariot drawn by four horses abreast (the Roman Empire's equivalent of Ancient Greek tethrippon). It was raced in the Ancient Olympic Games and other contests. It is represented in profile as the chariot of gods and heroes on Greek vases and in bas-relief. The quadriga was adopted in ancient Roman chariot racing. Quadrigas were emblems of triumph; Victory and Fame often are depicted as the triumphant woman driving it. In classical mythology, the quadriga is the chariot of the gods; Apollo was depicted driving his quadriga across the heavens, delivering daylight and dispersing the night.
The word quadriga may refer to the chariot alone, the four horses without it, or the combination.
All modern sculptural quadrigas are based on the four bronze Horses of Saint Mark or the "Triumphal Quadriga", a set of equine Roman or Greek sculptures, the only quadriga to survive from the classical world, and the pattern for all that follow.  Their age is disputed. They were originally erected in the Hippodrome of Constantinople, possibly on a triumphal arch, and is now in St Mark's Basilica in Venice. The set was looted by Venetian Crusaders in the Fourth Crusade (which date them to at least 1204) and placed on the terrace of the basilica. In 1797, Napoleon carried the quadriga off to Paris, but in 1815 the horses were returned to Venice. Due to the effects of atmospheric pollution, the original quadriga was retired to a museum and replaced with a replica in the 1980s.
Some of the most significant full-size free-standing sculptures of quadrigas include, in approximate chronological order:
- 1793 - The Berlin Quadriga was designed by Johann Gottfried Schadow in 1793 as the Quadriga of Victory, perhaps as a symbol of peace (represented by the olive wreath carried by Victory). Located atop the Brandenburg Gate in Berlin, Germany, it was seized by Napoleon during his occupation of Berlin in 1806, and taken to Paris. It was returned to Berlin by Field Marshal Gebhard von Blücher in 1814. Her olive wreath was subsequently supplemented with an Iron Cross. The statue suffered severe damage during the Second World War, and the association of the Iron Cross with Prussian militarism convinced the Communist government of East Germany to remove this aspect of the statue after the war. The iron cross was restored after German reunification in 1990.
- c. 1815 - The Carrousel quadriga is situated atop the Arc de Triomphe du Carrousel in Paris, France. The arch itself was built to commemorate the victories of Napoleon, but the quadriga was sculpted by Baron François Joseph Bosio to commemorate the Restoration of the Bourbons. The Restoration is represented by an allegorical goddess driving a quadriga, with gilded Victories accompanying it on each side.
- 1819-29 - The Quadriga on the General Staff Building on the Palace Square in Saint Petersburg
- 1828-32 - The Quadriga on the Alexandrinsky Theater, in Saint Petersburg
- c. 1841 - The Panther Quadriga on the Semperoper in Dresden
- 1845-48 - The Quadriga on top of Thorvaldsen Museum in Copenhagen by Hermann Wilhelm Bissen and Stephan Ussing
- c. 1850 - The Quadriga on the Bolshoi, above the portico of the Bolshoi Theatre designed by sculptor Peter Clodt von Jürgensburg
- c. 1852 - The Siegestor (Victory Gate) in Munich is topped by a lion quadriga created by Martin von Wagner
- 1868 - The Quadriga on the ducal palace in Braunschweig was destroyed in 1944 during the Second World War. It was reconstructed in 2008 and is considered as the largest one in Europe
- c. 1900 - Two Quadrigas on the Grand Palais in Paris, the work of French sculptor Georges Récipon
- c. 1900 - Atop the Arch at Grand Army Plaza in Brooklyn, New York, lady Columbia, an allegorical representation of the United States, rides in a chariot drawn by two horses. Two winged Victory figures, each leading a horse, trumpet Columbia's arrival. The sculptor was Frederick William MacMonnies.
- c. 1900 - Victory and Progress, horse-drawn chariots by J. Massey Rhind on the Wayne County Building in Detroit, Michigan, though each of the two chariots is drawn by three instead of the customary four horses.
- 1895 - The Quadriga of Brabant, situated on top from Parc du Cinquantenaire (1880–1905); built for the 50 years of Belgian Independence, in Brussels, Belgium, was built by Thomas Vinçotte and Jules Lagae
- 1906 - Progress of the State at the Minnesota State Capitol is unique for being entirely covered in gold leaf, and is situated above a building entrance rather than a triumphal arch. It was sculpted by Daniel Chester French and Edward Clark Potter.
- 1911-35 - The Monument to Vittorio Emanuele II (Monument of Victor Emmanuel II, or Altare della Patria (Altar of the Nation), or "Il Vittoriano") in Rome, Italy features two statues of goddess Victoria riding on quadrigas.
- 1912 - The Wellington Arch Quadriga is situated atop the Wellington Arch in London, England. It was designed by Adrian Jones. The sculpture shows a small boy (actually the son of Lord Michelham, the man who funded the sculpture) leading the quadriga, with Peace descending upon it from heaven.
- 1919-23 - The former Banco di Bilbao headquarters at no. 16 Calle de Alcalá in Madrid, now part of Banco Bilbao Vizcaya Argentaria, features two quadrigas on a commercial building. The building was designed by Ricardo Bastida, with the sculptor of the chariot Higinio Basterras, and other sculptures by Quentin de la Torre. The charioteers are helmeted men standing on the handrails of the chariots. Height to plinth: about 87 feet (27 meters).
- 2002 - The Grand Theatre, Warsaw features a quadriga reflecting the original 1833 plans for the building, but not commissioned and executed until 2002.
- Horses of Saint Mark in Venice, remnants of a quadriga of Constantinople taken by Enrico Dandolo.
- Biga, the ancient two-horse chariot.
- Trigarium (triga)
- Annual Report of the American Scenic and Historic Preservation Society to the Legislature of the State of New York, Volume 18, by American Scenic and Historic Preservation Society, 1913, page 344
- BBC News - A Point of View: The European dream has become a nightmare
- Brandenburg Gate. Berlin - Offizielles Stadtportal der Hauptstadt Deutschlands - Berlin.de.
- MNHS.ORG | Minnesota State Capitol
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