Istanbul (Blachernae) Turkey
[Orthodox]This church, thought to be the earliest dedicated to Saint Nicholas, was built in Constantinople by Emperor Justinian during the 6th century. The church was between the Church of the Virgin and the land walls of Blachernae. It was burned in AD 626 and later rebuilt. The church was brought within the protective walls of the city when the outer wall was built in AD 627. A Tower of St. Nicholas stood in the northwest corner between the Heracleian (AD 627) and Leonine (Ad 813) walls.