The Port of Piraeus is a major industrial and commercial center of Greece. It is one of the largest passenger and commercial ports of the Mediterranean and a major commercial gateway from Asia to Europe. It is lies on the Saronic Gulf on the west coast of Attica.
It was established in the 5th century BCE and was the focus of Athens’ entire import and export trade. After the victorious naval battle of Salamis (480 BCE), it was fortified and joined with Athens by the Long Walls, two parallel walls seven kilometers long and 174 meters between them, and designed to secure the communication between Athens and its port. From the 3rd century BCE, the port gradually began to decline, but emerged once again in the 19th century with the foundation of the modern Greek state.