There are beaches, campsites, fishing places and a hang gliding soit. Despite these things, population in the island is decreasing year after year.
The Ooshima Bridge was erected in 1976. The tide is known as one of the fastest in Japan. It is the second longest span in Japan of this style of bridge. The span of the bridge is 1020m. Its color is pale green.
Katazoegahama beach is one of the more popular beaches in the west of Japan. This is also famous for camping. There is a tennis court and a roller skate rink, near the beach. Furthermore, there is a resort hotel.
Ooshima is a sister city of Hawaii. There is a Hawaii historical museum, which was built in 1999 in Oshima. Office workers and bus drivers in town wear colorful aloha shirts as a uniform in summer.