The Erechtheion (or Erechtheum), built c. 420 B.C., sports the porch of the Caryatids (or porch of the Maidens), architectural supports used as pillars and fashioned as women. The main temple was dedicated to the worship of the two principal gods of Attica, Athena and Poseidon-Erechtheus, in two separate areas. This is located across from the Parthenon.