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 fire devastated many of its state rooms. In the year to 31 March 2017, 580,000 people visited the palace, and 154,000 visited the gallery. Her Majesty's Government is responsible for maintaining the palace in exchange for the profits made by the Crown Estate. In November 2015, the State Dining Room was closed for six months because its ceiling had become potentially dangerous. A 10-year schedule of maintenance work, including new plumbing, wiring, boilers, and radiators, and the installation of solar panels on the roof, has been estimated to cost £369 million and was approved by the prime minister in November