Ancient Roman ports and harbours in Turkey

Trabzon is a city on the Black Sea coast of northeastern Turkey and the capital of Trabzon Province. Historically known as Trebizond, the city was founded in 756 BC as Trapezous by Greek colonists from Miletus. It was added into the Achaemenid Empire by Cyrus the Great and was later part of the independent Kingdom of Pontus that challenged Rome until 68 BC. Thenceforth part of the Roman and later Byzantine Empire, the city was the capital of the Empire of Trebizond, one of the successor states of the Byzantine Empire after the Fourth Crusade in 1204. In 1461 it came under Ottoman rule.