[3] Construction began in 2012 with the excavation of an enormous foundation cut into a hillside so that so that the roof level entrance of the large building is at ground level between the two, existing, major museums, while the lowest floor opens onto a street at the foot of the hill.
[4][5] The Antiquities Authority was formerly located in cramped quarters at the Rockefeller Museum in East Jerusalem.
[5] The roof of the building is a large plaza with views of the Jerusalem hills.
Several important Byzantine-era mosaics from churches and synagogues are on permanent display; this part of the campus is open to the public while construction continues on the interior of the building the visitor's feet.
[3] Displays include a 6th-century, Byzantine-period mosaic floor, discovered in an ancient synagogue in Ein Gedi and featuring a curse in Judeo-Aramaic that invokes God's wrath upon anyone who neglects his family, provokes conflict, steals property, slanders his friends or "reveals the secret of the town", presumably referring to Ein Gedi's balsam industry or possibly cursing those who slader their Jewish community in front of Gentiles.