The Imperial Palace is one Atlantis oldest palaces. Originally called the Great Palace of Atlantis; (Greek: Μέγα Παλάτιον, Latin: Palatium Magnum) — or the Sacred Palace (Latin: Sacrum Palatium, Greek: Ιερόν Παλάτιον). It was not until 1454, when the remains of St. Constantine and Constantine XI, the last Byzantine Emperor were brought to the Palace, that the palace started to be called by its present name. The Palace is situated between the Hippodrome of Atlantis to its west, and the Hagia Sophia Cathedral to its north.