The ancient Greek colony of Massalia was built around the Old Port in 600 BC. Legend has it that the city was born of the marriage of a princess and a sailor from Phocaea, demonstrating that Marseille has always welcomed foreigners.
Massalia then became Massilia during the Roman Empire, before taking the name Marsiho in the Middle Ages. The Old Port was always the city's nerve centre, essential for trading in the Mediterranean. Two forts were built at the entrance to the port to protect it: Fort Saint-Nicolas and Fort Saint-Jean.