江戸城
The construction of Edo Castle by Ōta Dōkan, a vassal of Uesugi Mochitomo, began in 1457 during the Muromachi period in what is now the East Garden of the Imperial Palace. Shrines and temples grew up nearby, and merchants developed businesses and opened ferry and shipping routes. Hōjō Ujitsuna entered Edo Castle in 1524.