Tokaikan (東海館 ,Tōkaikan) was built in 1928 in central Ito City on the Izu Peninsula and was further expanded twice in 1938 and 1949. It is one of only few remaining hot spring ryokan built of wood during the early Showa Period. Tokaikan operated as a ryokan until 1997 before undergoing restoration works and then reopened in 2001 as a historical and cultural sightseeing spot open to the public.