Ainoshima (Shingū)Ainoshima is an island in Shingū, Fukuoka, Japan. Many feral cats and strays live on this island. Hence, it is known as "Cat Heaven Island".WWW town.shingu.fukuoka.jp/in...Sightseeing spotsAinoshima has some historic sites.TumuliThese piles of stone from the 5th century are located on the eastern side of the island. They are speculated to mark ancient graves.Transportation Shingū Municipal Ferry Service Shingū Port – Ainoshima Port : Required time and fare: approx. 17 minutes, 480 JPY Shingū Port is a twenty-minute walk from Nishitetsu Shingū Station.