the National Diet Library and can be used freely by anyone affiliated with the Diet. The fourth floor does not have a restroom because it would be situated above the restroom designated for the Emperor, located nearby Gokyusho (as described later). In September 2003, the central tower was hit by lightning, and the granite stone at the top of the tower ruptured, breaking the stained glass beneath. Employees of Kajima Corporation who happened to be present at the scene to fix a restroom requested help from their own company which ended up being in charge of the repair work of the tower. The ruptured granite stone is currently owned by Tohoku University and the Kiseki Museum of World Stones in Fujinomiya, Shizuoka. Gokyūshō The Gokyūshō (御休所) was originally referred to as Gobinden (御便殿) and was built as a place for the Emperor to rest upon his visit to the Diet to attend events like the opening and closing ceremonies. The chamber is located at the top of the main stairway covered with a red carpet that leads from the central hall. The “L” shaped desk for the Emperor is a remnant from the pre-war era when the Emperor dressed in military uniform and needed a place for his hat. In this room, the Emperor receives courtesy visits from chairmen and vice chairmen of both Houses before attending the opening ceremony in the Chamber of the House of Councilors. Supposedly with ten percent of the entire construction cost spent on this room, Gokyūshō is entirely made of cypress coated with Japanese lacquer, and adornments above the outside of the room are made from cuckoo, a type of stone extracted in Anan, Tokushima. The materials and decorations used for this room are particularly rich in craftsmanship and glamour among all the rooms in the Diet building. The chandelier is made of crystal. A private restroom for the Emperor stands close to Gokyūshō and has both western and Japanese style toilets. When the Emperor travels between the Imperial Palace and the Diet, he is escorted by police motorcade, police cars, and an open limousine accompanied by Imperial Palace guards and law enforcement officials from the Tokyo police department. Diet guards put on white ceremonial robes in the summer and black robes in the winter on the day of the Emperor's visit. It is said that Mount Fuji could be viewed from the windows