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 Road 116 Victoria Street. It was in that building that the Boy Scouts' International Bureau (now the World Scout Bureau) was inaugurated in 1920. The UK Scout Headquarters remained at that address until December 1974, when it moved to Baden-Powell House. The Girl Guides Association (now Girlguiding) rented offices within Scout Headquarters until 1929 when there was no longer storage space for the Association's records. Following a national fundraising campaign called "Save Our Stuff" the Guides were able to move into their own purpose-built headquarters at 17-19 Buckingham Palace Road, which they still occupy today. The entrances to the Royal Mews