The gallery displaying original paintings was placed in the first floor halls of the neo-classical building; however, only plaster casts were available to illustrate a complete history of European sculpture. It was for these life-size copy sculptures that the Doric, Ionic, Romanesque, Renaissance and Baroque halls on the ground floor were designed, imitating the styles of individual periods of art history. However, as the number of original works increased, so the plaster sculptures were forced out of the building (the only one remaining, a copy of the group in the pediment of the temple of Zeus at Olympia, can be seen on the tympanum above the Museum's main entrance), and the ground floor galleries are now also used to display original works of art. On the ground floor are the exhibitions of the Classical Antiquities and of 19th century paintings and sculptures; the Renaissance hall, where in addition to Renaissance frescoes and fountains items from the Sculpture Collection may be seen; the Prints and Drawings Gallery with temporary exhibitions; and the Marble and Baroque halls.
Due to the continuous renovation work on the building, individual permanent exhibitions of the Old Masters' Gallery may temporarily be moved.