Belle Isle, officially Belle Isle Park, is a island park in the Detroit River, between the United States mainland and Canada. Owned by the City of Detroit, it is managed as a state park by the Michigan Department of Natural Resources through a 30-year lease initiated in 2013. Belle Isle is the largest city-owned island park in the United States and is the third largest island in the Detroit River after Grosse Ile and Fighting Island. It is connected to mainland Detroit by the MacArthur Bridge.