 Every Winter, Sandpoint Beach is home to the "Polar Bear Dip", a long-running tradition of beach-goers running into the freezing (and often ice-covered) lake and swimming briefly to raise money for charities, or for the local hospitals.Only accessible by boat, this island park is fun for picnics and exploration, at the mouth of Detroit River and Lake St. Clair.Another of Windsor's Crown Jewel parks, this is the oldest in the city, tied with Mic Mac Park (1917).