The Thousand Islands

The Thousand Islands are a group of more than 1,800 islands in the St. Lawrence River, straddling the border of the U.S. and Canada. A fashionable retreat for the elite in the late 19th century, today the area is a hub for outdoor activities. It’s home to elaborate island mansions such as the German-style Boldt Castle on Heart Island, and Singer Castle on Dark Island, with its Gothic windows and secret passageways.

 

New to the 1000 Islands? Download the official travel guide to help you plan your trip. Popular activities and attractions are included below.