Though economically poor, Sagami is rich in history. It is the home of the Hojo clan and seat of the earlier Kamakura Shogunate. Japan's most famous swordsmith, Masamune, is believed to have worked and taught here. It is also the location of Odawara Castle, which was besieged at different times, and with different degrees of success, by famous warriors such as Takeda Shingen, Uesugi Kenshin and Toyotomi Hideyoshi.