Mosenthein Island

Mosenthein Island, situated approximately eight miles (13 km) due north of the Gateway Arch in St. Louis, Missouri, and approximately one mile (1.6 km) south of the confluence of the Missouri River and Mississippi River, is one of a cluster of three islands: Chouteau Island, Gabaret Island, and Mosenthein Island. Mosenthein Island is 1,077 acres in area. The island is mainly bottomland forest. It is only accessible by boat.