The main temple was divided into two sections, dedicated to the worship of the two principal gods of Attica, Athena and Poseidon-Erechtheus. A relief frieze, bearing a representation possibly of the birth of Erechtheus, decorated the exterior of the building. The Caryatids. Statues of young women clad in peplos. They supported the roof of the south porch of the Erechtheion, and probably were the work of Alkamenes, a student of the great sculptor Pheidias. Dated to ca. 420 B.C. Inv. no. 15000-15003

Erechtheon

The Erechtheion was built in ca. 420 B.C. in the Ionic order. It has a prostasis on the east side, a monumental propylon on the north, and the famous porch of the Caryatids on the south. The main temple was divided into two sections, dedicated to the worship of the two principal gods of Attica, Athena and Poseidon-Erechtheus. A relief frieze, bearing a representation possibly of the birth of Erechtheus, decorated the exterior of the building.

The monumental gateway of the Acropolis was designed by the architect Mnesikles and constructed in 437-432 B.C. It comprises a central building and two lateral wings. The colonnades along the west and east sides had a row of Doric columns while two rows of Ionic columns divided the central corridor into three parts. The walls of the north wing were decorated with painted panels or wall paintings and that is why it was called the "Pinakotheke". The ceiling of the Propylaea had coffers with painted decoration and a perforated sima around the roof.