Ōmishima is best known as part of the Shimanami Kaidō cycling route, located roughly in the middle. The border between Hiroshima and Ehime prefectures runs between Innoshima and Ōmishima, making Ōmishima part of Shikoku.

The large complex of Ōyamazumi Shrine is a must-see, including its remarkable collection of weapons and armour. The island competes with Naoshima as an ‘art island’ with the Ōmishima Museum of Art, the Tokoro Museum, the Toyo Ito Museum of Architecture, and the Ken Iwata Mother and Child Museum dotted around its west side. Ōmishima makes a brief appearance in The Wolverine starring Hugh Jackman. 

There’s some good hiking on Ōmishima, including an easy route up to Irihi Falls, a small but attractive waterfall and to Mt. Washigatō above offering a breathtaking view over the Inland Sea. Utena Beach is a very picturesque spot for swimming. 

A ferry goes from the northern end of Ōmishima to Ōkunoshima, otherwise known as Rabbit Island.