 During the Genpei War between the Heike clan and Minamoto no Yoritomo, the Battle of Ishibashiyama was fought near present-day Odawara.During the Sengoku period, Odawara developed as a castle town and capital of the domains of the later Hōjō clan, which covered most of the Kantō region.The Hōjō were defeated by Toyotomi Hideyoshi in the Battle of Odawara in 1590, despite the impregnable reputation of Odawara Castle.