Escher in the Palace one's eyes will be tricked by multiple interactive displays. In the rooms of the museum are fifteen chandeliers made by the Rotterdam artist, Hans van Bentem. The artist designed these especially for the museum, with some references to the work of Escher and the Palace. In the ballroom, a star chandelier is endlessly reflected in the two mirrors. In other rooms there are chandeliers such as a shark, a skull, spiders, and a sea horse. The parquet floor in the Palace was designed in 1991/92 by the American minimal artist Donald Judd on the occasion of the opening of the
Buckingham Palace high and contains over of floorspace. The floor area is smaller than the Royal Palace of Madrid, the Papal Palace and Quirinal Palace in Rome, the Louvre in Paris, the Hofburg Palace in Vienna, and the Forbidden City. There are 775 rooms, including 188 staff bedrooms, 92 offices, 78 bathrooms, 52 principal bedrooms, and 19 state rooms. It also has a post office, cinema, swimming pool, doctor's surgery, and jeweller's workshop. The principal rooms are contained on the "piano nobile" behind the west-facing garden façade at the rear of the palace. The centre of this ornate suite of state rooms