The Hippodrome is now a long, quiet garden square in Sultanahmet, and it sits several metres above a buried Roman racetrack. What remains above ground are the monuments that once lined the central barrier. An Egyptian obelisk cut for Thutmose III points skyward, older than the city around it. A twisted bronze serpent column carried from Delphi stands in a sunken pit further along, and at the southern end the Walled Obelisk rises in bare masonry, stripped of the gilded bronze that once sheathed it. At the north end, where most people arrive, a domed marble kiosk called the German Fountain marks the square's newest layer.
Septimius Severus laid the course out around 200 AD, and Constantine widened it into the centre of his new capital. For a thousand years chariots tore around a U-shaped track while tens of thousands roared from tiered stone seats, all of which have gone. The crowd split into rival colour factions, the Blues and the Greens, and their feuds ran from sport into politics; in 532 the Nika riots began here and left much of the city in ashes.