Acropolis. Athens. Greece. View of the famous Caryatid porch on the south side of the Erechtheion on the Acropolis summit. The porch or balcony has six sculptured graceful figures of maidens supporting the entablature. These figures are copies, five of the original six maidens are displayed in the new Acropolis museum and the sixth looted by Lord Elgin is on display in the British Museum. Built between 420 and 406 BC, the elegant and unusually shaped Erechtheion Temple was designed to incorporate a number of ancient sanctuaries and cults including that of Athena and her olive tree and Poseidon-Erechtheus. The Erechtheion was part of the monumental rebuilding and transformation of the Acropolis buildings during the time of Perikles. The Acropolis of Athens and its monuments are a UNESCO World Heritage Site.