Hippodrome monuments
To raise the image of his new capital, Constantine and his successors brought works of art from all over the empire to adorn it. Among these was the Tripod of Plataea, cast to celebrate the victory of the Greeks over the Persians during the Persian Wars in the 5th century BC. Constantine ordered the Tripod to be moved from the Temple of Apollo at Delphi, and set in middle of the Hippodrome. Most of it was destroyed or stolen when the city was sacked during the Fourth Crusade. All that remains today is part of the base, known as the "Serpentine Column."
Another Emperor to adorn the Hippodrome was Theodosius the Great, who in 390 AD brought an obelisk from Egypt and erected it inside the racing track. Carved from pink granite, it was originally erected at the Temple of Karnak in Luxor during the reign of Tuthmosis III in about 1490 BC. Theodosius had the obelisk cut into three pieces and brought to Constantinople. Only the top section survives, and it stands today where Theodosius placed it, on a marble pedestal. The obelisk has survived nearly 3,000 years in astonishingly good condition.
In the tenth century AD the Emperor Constantine Porphyrogenitus built another obelisk at the other end of the Hippodrome. It was originally covered with gilded bronze plaques, but these were stolen during the Fourth Crusade. The stone core of this monument also survives, known as the Walled Obelisk.
The Hippodrome today
Today the area is officially called Sultanahmet Square, and is carefully maintained by the Turkish authorities. The course of the old racetrack has been indicated with paving, although the actual track is some two metres below the present surface. The surviving monuments of the spina (the middle barrier of the racecourse), the two obelisks and the Serpentine Column, now sit in holes in a landscaped garden. A rather ugly octagonal domed fountain donated to the Ottoman Empire by the German Emperor Wilhelm II in 1898 sits at the entrance to the Hippodrome area.
The Hippodrome has never been systematically excavated by archaeologists. A portion of the substructures of the sphendone (the curved end) became more visible in the 1980s with the clearing of houses in the area.
In 1993 an area in front of the nearby Sultanahment Mosque (the Blue Mosque) was bulldozed in order to install a new toilet. This disclosed several rows of seats and a some columns from the Hippodrome. Investigation did not continue further, but the seats and columns were removed and can now be seen in Istanbul's museums. It is possible that much more of the Hippodrome's remains still lie beneath the parkland of Sultanahmet.