Built by Hojo Tokimune (1251-1284), the eighth regent and military governor of Kamakura, the Zen Buddhist temple complex of Engaku-ji was founded to commemmorate the Japanese and Mongols who died in the dual attempted invasions instigated by the Mongol Emperor Kublai Khan (1274 and 1281). Its architecture is a combination of kato mado (bell-shaped windows) and sankarado (wooden cross bars), two traits of Zen temples. Engaku-ji is particularly popular with visitors on account of its Reliquary Hall, said to house a tooth of the Buddha.