Boundary Island (Hainan, China)
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Boundary Island is an island in Lingshui County, Hainan, China, located just off the south-east coast of Hainan Island, between Lingshui and Wanning, in Riyue Bay at 18.57864°N 110.195381°E / 18.57864; 110.195381.
It is the earliest development of an open uninhabited tourist type area. In 2008 it became a national 4A level scenic spot, and in 2013 was promoted to national 5A-class tourist attraction, becoming China's first.
Adapted from Wikipedia (CC BY-SA). Photography via Wikimedia Commons.