Amakusa is a city spread over several islands in southwestern Japan. Amakusa Christian Museum on Shimoshima Island and Santa Maria Museum on Ueshima Island trace the history of the area's “hidden Christians” during the Edo Period. The Catholic churches of Sakitsu and Oe Tenshudo date from the 1930s. Wild dolphins can be seen from boats off Shimoshima’s northwestern coast. Mogushi is a popular beach in the southwest.