The term acropolis means upper city, The Acropolis of Athens is the best known acropolis. Most of the major temples were rebuilt under the leadership of Pericles during the Golden Age of Athens (460–430 BC) with Phidias, a great Athenian sculptor, and Ictinus and Callicrates, two famous architects. The Parthenon, the Erechtheon, the Propylaea, the monumental entrance to the Acropolis, and the small temple Athena Nike. They are universal symbols of the classical spirit and civilization bequeathed by Greek Antiquity to the world.