People lived on this rock long before anyone wrote about it. Pottery fragments from the Middle Neolithic place the first dwellers here in the sixth millennium BC, and by the late Bronze Age a Mycenaean palace stood on the summit. Around the rock, builders raised a Cyclopean wall of huge stone blocks bonded with earth mortar, a fortification so massive that Homer seems to refer to it when he writes of the strong-built house of Erechtheus. An earthquake split the northeast corner sometime before the thirteenth century BC, and the Athenians turned the fissure into a stairway down to a hidden well. During sieges, that single source of fresh water kept the citadel alive. Long before democracy, marble, and tragedy, the rock was already a survival strategy.

The buildings most visitors come to see all date from a single generation. After the Persian armies of Xerxes I sacked Athens in 480 BC, burning everything on the rock, the Athenians swore an oath not to rebuild the temples and to leave them as a memorial. They kept that oath for thirty years. Then Pericles changed his mind. Between roughly 460 and 430 BC, the sculptor Phidias and the architects Ictinus and Callicrates oversaw the construction of the Parthenon, the Propylaea, the Erechtheion, and the small Temple of Athena Nike. The Erechtheion alone houses six caryatids, columns carved as women, who hold up its southern porch. Behind the Propylaea once stood Phidias's bronze Athena Promachos, whose gilt spear-tip, the historian Pausanias claimed, was visible to ships rounding Cape Sounion.

Ancient Athens did not abandon the Acropolis when its golden age ended. The Romans repaired what time and earthquakes wore down, and added their own monuments, including a small round Temple of Roma and Augustus just east of the Parthenon. In 161 AD, Herodes Atticus built his great odeon on the southern slope. Christianity came; the Parthenon became a church dedicated to the Virgin. The Crusaders made it a Catholic cathedral. The Ottomans turned it into a mosque, with a minaret rising from its southwestern corner, and used the Erechtheion as the governor's harem. Then came the gunpowder, the 1687 explosion, and the slow trickle of marbles to museums in London, Paris, and elsewhere. In 1801, Lord Elgin began removing roughly half the surviving sculptures with permission from the Ottoman authorities, a transaction that has remained disputed ever since.

The Acropolis Restoration Project began in 1975, partly because pollution from twentieth-century Athens had begun to dissolve marble that had survived two and a half millennia of weather. The restorers' rules are strict. They use titanium dowels, not the rusting iron that earlier conservators inserted in the 1900s and that cracked the marble from the inside out. They reuse original stones whenever possible, a Greek technique called anastylosis. New marble, quarried from the same Mount Pentelicus that supplied the originals, is used sparingly. Every intervention is designed to be reversible if a future generation knows more than this one. By the end of the project's main phases, 2,675 tons of architectural members had been restored, 905 patched, and 530 cubic meters of new Pentelic marble cut. The scaffolding came down in late 2025 after fifteen years on the western façade.

The Acropolis is also a record of more recent defiance. In April 1941, when German troops took Athens, soldiers raised the swastika flag over the rock. About a month later, on the night of May 30, two students named Manolis Glezos and Apostolos Santas climbed the rock in the dark and tore the flag down. It was one of the first acts of organized resistance in occupied Europe, and it earned both men long sentences after they were eventually caught. In 1944, when the Nazis withdrew, Greek Prime Minister Georgios Papandreou came to the Acropolis to celebrate liberation. The flag that flies there today is Greek, and it has not come down since.