Ishigakiyama Castle, known for its Ichigakiyama Castle, is a castle that is said to have been built overnight by Toyotomi Hideyoshi on the summit of Mount Ishigaki during the attack on Odawara in Tensho 8 (1590). It built a skeleton of a fence or a tower [yagura], laid a blank sheet of paper to make it look like a white wall, and cut down the surrounding trees overnight to make it look like a castle was created overnight. The actual castle was completed in 82 days. The Honmaru, which still has a tower tower, and the Ninomaru (bakuya-bakuwa), as well as the Minami-Ku-Ran and the Well-Bu-Ran, where stone walls with a field area can be seen, remain. You can see Odawara Castle from the bookmark of the Honmaru. It is a country-designated historic site, "Ishigakiyama", and has also been selected as the "100 Great Castors of Japan" by the selection of the Japan Castle Association.