 Construction of a 31-story mixed-use tower of four floors of shops, 14 floors of offices, and 363 guest rooms on the top 12 floors began on December 25, 1979.The new tower opened on March 13, 1983.Princess Sayako (the third child and only daughter of Emperor Akihito and Empress Michiko of Japan, now Sayako Kuroda), was married at the Hotel in 2005.