How old is Istanbul?

How old is Istanbul?

The city of Istanbul is steeped in a history that spans over two and a half millennia. Established in the 7th century BCE, Istanbul, previously known as Byzantium and Constantinople, has served as the capital of four different empires and has absorbed the rich cultural influences of each, making it one of the oldest and most historically significant cities in the world.

How old is Istanbul?

The Founding of Byzantium

Istanbul’s history began in 657 BCE when it was founded as a colony by Greek settlers from Megara, who named it Byzantium after their king, Byzas. Strategically located on the European side of the Bosporus strait, Byzantium was an important city for trade between Europe and Asia, making it a coveted possession for various powers throughout history.

Transformation into Constantinople

In 330 CE, Byzantium underwent a significant transformation. Emperor Constantine the Great, after adopting Christianity, made Byzantium the new eastern capital of the Roman Empire and renamed it Constantinople. With this change, Constantinople emerged as a prominent center of the Christian world.

The Ottoman Conquest and Beyond

Constantinople fell to the Ottoman Turks in 1453 under the leadership of Mehmet the Conqueror. The city, renamed Istanbul, became the capital of the Ottoman Empire and an important center for Islamic culture and education.

Following the dissolution of the Ottoman Empire after World War I, the Republic of Turkey was established in 1923 with Ankara as its capital. Nevertheless, Istanbul continued to be a significant cultural, historical, and economic hub.

Modern Istanbul

Today, Istanbul, with its rich historical heritage and vibrant modern culture, is a testament to its long history. From its ancient city walls and Roman aqueducts to the Byzantine Hagia Sophia and the Ottoman Topkapi Palace, every corner of Istanbul reveals a part of its illustrious past.


In conclusion, Istanbul’s history dates back over 2,600 years. Throughout its existence, the city has been a major stage for historical events, serving as a bridge between continents, cultures, and eras. As old as it is, Istanbul continues to be a dynamic, bustling metropolis, ever-evolving while still keeping its history alive.