Mycenae

A citadel on a hill 274 metres up commanding the Argive plain, and the centre of the civilisation that gave the Greek Bronze Age its name. At its height around 1350 BC something like 30,000 people lived in the citadel and lower town across 32 hectares. You go in under the Lion Gate, through walls of blocks so large that later Greeks assumed the Cyclopes had stacked them and called the style Cyclopean, which is a rare case of an ancient explanation surviving as the technical term. Heinrich Schliemann dug here from 1874 to 1876, found Grave Circle A with six shaft graves and a mass of gold, and announced he had gazed on the face of Agamemnon. He had not: the masks predate any plausible Trojan War by more than three hundred years. UNESCO listed Mycenae and Tiryns together in 1999.