Tadaji Temple is a Koyasan Shingon Buddhist temple located in Tada, Obama City, Fukui Prefecture. The principal image is Yakushi Nyorai (the Medicine Buddha). Founded in 749 AD by the monk Shogyo at the imperial command of Empress Koken, it had 12 sub-temples at its peak. In April 2015, it was designated as a Japan Heritage site as part of the "Wakasa's Cultural Heritage Group Connecting the Sea and the Capital - Miketsukuni Wakasa and the Saba Kaido (Mackerel Road)." This offering includes a goshuin (temple stamp) and a written history of the temple. Empress Koken's eye disease was cured through the temple. The main image is a wooden standing statue of Yakushi Nyorai, and there are also wooden statues of Gekko Bosatsu (Moonlight Bodhisattva) and a wooden statue of Nikko Juichimen Kannon Bosatsu (Sunlight Eleven-Faced Kannon Bodhisattva), among others. All of these are designated as Important Cultural Properties of Japan. The Nikko Juichimen Kannon Bosatsu statue, in particular, is believed to predate the establishment of Japanese esoteric Buddhism and is highly valuable as a historical artifact. Tadaji Temple is also known as the "Shusse Yakushi" (Success Medicine Buddha), and it has a bell that is said to bring financial fortune. Toyotomi Hideyoshi is said to have rung the bell, which enabled him to build a castle in Nagahama.