The Old Acropolis Museum was an archaeological museum located in Athens, Greece on the archeological site of Acropolis. It is built in a niche at the eastern edge of the rock and most of it lies beneath the level of the hilltop, making it largely invisible. It was considered one of the major archaeological museums in Athens. Due to its limited size, the Greek Government decided in the late 1980s to build a new museum. The New Acropolis Museum is now built at the foot of the Acropolis. In June 2007 the old museum closed its doors so that its antiquities could be moved to their new home, which opened on 20 June 2009.