The ancient retaining wall of the closed end of the Hippodrome joins the Obelisks and Spina as the only remaining relics of the early Byzantine period. Today, this enduring infrastructure supports the buildings of Marmara Technical University. The structure is best viewed from below (access down the hill along Sifa Hamami Sok. to Nakilbent Sok.); notice the 2m (6 1/2 ft.)-high niches that used to contain statues (now evocative seating for an outdoor tea garden and restaurant). The high arched section served as the stables.