The Caryatid sculptures, which date to the late 5th century B.C. and once propped up part of the ancient Erechtheion temple on the Acropolis, are displayed on a balcony.
The museum has five floors that provide space for 4,000 artifacts, ten times the number displayed in the old building. Images of some of the pieces follow.
The new facility, 226,000 square feet of glass and concrete designed by the New York-based architect Bernard Tschumi, replaces the old Acropolis Museum, a small 1874 building tucked into the rock of the Acropolis next to the Parthenon.