Constantinople
Istanbul was formerly known as Constantinople and Byzantium.
Byzantium, Constantinople
Istanbul, Byzantium ,
Constantinople was the previous name of the city of Istanbul in Turkey.
Asia and Europe.
The city has had three names over time. It's original name was Byzantium, became Constantinople, and is now known as Istanbul.
Istanbul, Constantine, Byzantium, Constantinopolis, Kostantiniyye. All I could find.
Istanbul
Constantinople was the previous name of Istanbul, Turkey. As a child, we used to sing a song that went "You can't go back to constantinople, because it's Istanbul now".
Constantinople and Byzantium
Yes Istanbul and Byzantium are the same city. Among the names of Istanbul, the most notable are Byzantium, Constantinople and Stamboul, although the city has been known through the ages under various other names. Each of them is associated with different phases of its history and with different languages. It was first named Byzantium in 667 BCE by Greek colonists.