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.
Great Palace of Constantinople
The Great Palace of Constantinople (, "Méga Palátion"; Latin: "Palatium Magnum", Turkish: "Büyük Saray"), also known as the Sacred Palace (, "Hieròn Palátion"; Latin: "Sacrum Palatium"), was the large Imperial Byzantine palace complex located in the south-eastern end of the peninsula now known as Old Istanbul (formerly Constantinople), in modern Turkey. It served as the main royal residence of the Eastern Roman or Byzantine emperors from 330 to 1081 and was the center of imperial administration for over 690 years. Only a few remnants and fragments of its foundations have survived into the present day.