Temple of Olympian Zeus
The temple is located approximately south-east of the Acropolis, and about south of the center of Athens, Syntagma Square. Its foundations were laid on the site of an ancient outdoor sanctuary dedicated to Zeus. An earlier temple had stood there, constructed by the tyrant Peisistratus around 550 BC. The building was demolished after the death of Peisistratos and the construction of a colossal new Temple of Olympian Zeus was begun around 520 BC by his sons, Hippias and Hipparchos.