The Acropolis of Athens is an ancient citadel situated on a rocky hill above the city of Athens. It contains the remains of several ancient buildings of great architectural and historic significance, the most famous being the Parthenon. The word acropolis comes from the Greek and means City on the Edge. Although there are many other acropoleis in Greece the Acropolis of Athens is most famous. It is the most complete ancient Greek monumental complex still existing in our times. The Acropolis and its monuments are universal symbols of the classical civilization and form the greatest architectural and artistic complex bequeathed by Greek Antiquity to the world. The most important monuments at the complex were constructed under Pericles' leadership in the fifth century BC. The site's most important buildings include the Parthenon, the Propylaea, the Erechtheon and the Temple of Athena Nike.