Didyma was never a city — no houses, no agora, no citizens. It was a machine for one purpose: asking the god Apollo about the future. And to house that purpose, the Greeks attempted one of the largest temples ever conceived.
The oracle of Didyma ranked second only to Delphi. Pilgrims walked the Sacred Way from Miletus to consult the priestess by the sacred spring; kings sent envoys with treasure and questions of war. Alexander the Great received a flattering prophecy here, and the rebuilding he encouraged produced the colossus you see: a platform of seven steps carrying a double forest of columns nearly twenty meters tall — around 120 of them planned, so ambitious that after six centuries of construction the temple was never quite finished.
What stuns visitors
Scale, first: more than half the temple still stands or lies where it fell, and single column drums dwarf the people photographing them. The fluted pair that survive to full height suggest what the complete forest must have felt like — old writers said it could compete with the Acropolis of Athens, and standing at its base you believe them. Then the details: the vaulted tunnels priests used to reach the inner court, the never-finished column surfaces still bearing masons' guidelines, and the great Medusa head, tumbled from the frieze, that has become the emblem of the whole Aegean coast.
Didyma pairs naturally with Miletus on our southern day tour — oracle and port, question and commerce, forty minutes apart.