Palace of Antiochos
Istanbul, Turkey
The Palace of Antiochos (ὰ ῶ Ἀ) was an early 5th-century palace in the Byzantine capital, Constantinople (modern Istanbul, Turkey). It has been identified with a palatial structure excavated in the 1940s and 1950s close to the Hippodrome of Constantinople, some of whose remains are still visible today. In the 7th century, a part of the palace was converted into the church—more properly a martyrion, a martyr's shrine—of St Euphemia in the Hippodrome (Ἀ ὐ ἐ ῷ Ἱῳ, Hagia Euphēmia en tō Hippodromiō), which survived until the Palaiologan period. Currently a hotel was constructed on top of the ruins but some traces of the palace can be seen under a glass floor at the dining hall.
Palace data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).