Thousand Islands
The Thousand Islands are a chain of islands that straddle the U.S-Canada border in the Saint Lawrence River as it emerges from the northeast corner Lake Ontario. The islands stretch for about 50 mi (80 km) downstream from Kingston, Ontario. The Canadian islands are in the province Ontario. The U.S. islands are in the State of New York.Geologically, the islands are located where a branch of the Canadian Shield runs south across the river to join with the Adirondacks. The islands have long been popular with boaters.
Around twenty of these islands form the St. Lawrence Islands National Park, the smallest of Canada's national parks. The Thousand Islands - Frontenac Arch region was designated a World Biosphere Reserve by UNESCO in 2002.
The U.S. islands include numerous New York state parks.
The islands are not to be confused with the Rivière des Mille-Îles in southwestern Quebec.