The main entrance leads to the hall from which starts the magnificent staircase leading to the second floor in a double helix. The hall gives access to the Square Drawing Room, which draws its name from the ornamental squares of its waxed floor and the mouldings of its ceiling. This drawing room is placed at the center of a succession of three major rooms, with on its left the Great Drawing Room in Empire Style and on the right the Dining Room, decorated with an astonishing gallery of family portraits. You will also admire the small Marcello Drawing Room owing its name to this Swiss woman sculptor, widow of a Roman Duke Castiglione Colonna, as well as the Library and the Guards Room. In this beautiful interior, you will come across the numerous souvenirs of the Snoy family, including those related to Count Jean-Charles Snoy et d’Oppuers (1907-1991), who was Minister of Finance and signatory of the Treaty of Rome in 1957.