Between 1893 and 1894, the old residence of Prince Katsura, which was located next to the Imadegawa-mon Gate of the Kyoto Gyoen Imperial Garden, was moved into Honmaru and it was named Honmaru Palace.
明治26年（1893年）から27年（1894年）にかけて、京都御苑の今出川門脇に位置する旧桂宮邸を本丸へ移築し、本丸御殿とする。