Constantinople
Constantinople (; ) was the capital city of the Roman/Byzantine Empire (330–1204 and 1261–1453), and also of the brief Crusader state known as the Latin Empire (1204–1261), until finally falling to the Ottoman Empire (1453–1923). It was reinaugurated in 324 from ancient Byzantium as the new capital of the Roman Empire by Emperor Constantine the Great, after whom it was named, and dedicated on 11 May 330. The city was located in what is now the European side and the core of modern Istanbul.
Constantine XI Palaiologos
Murad decided in favor of Constantine, and on 6 January 1449 Constantine was crowned in the cathedral at Mistra by the local bishop. It was rare, but not unprecedented, for an emperor to be crowned in a provincial city. Michael VIII Palaiologos, founder of the dynasty of Palaiologos, had been crowned at Nicaea, Asia Minor. John Cantacuzene was crowned at Adrianople, Thrace. Both held a second coronation ceremony at Constantinople, performed by the patriarch.