The ancient Hippodrome was the center of Byzantine social life and the scene of fiercely competitive chariot races. It was located in the square that is now in front of the Blue Mosque and is still the site of ancient relics from its glory days. These are the Obelisk of Theodosius, the bronze Serpentine Column, and the Column of Constantine. Remains of the curved end of the Hippodrome wall can be seen on the southwest side of the three monuments.