A 4-Acre Private Island Compound With an 1880s Summer House, 3 Cottages and a Boathouse, Listed for $4 Million

Sport Island sits in New York’s Thousand Islands, the St. Lawrence River archipelago along the Canadian border that became one of the Gilded Age’s fashionable summer destinations. Built around 1880 for a prominent Pennsylvania railroad-industrialist family, the property has since undergone a substantial partial restoration.