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Thousand Islands Marine National Park adventures

Thousand Islands Marine National Park Adventures

Thousand Islands Marine National Park is a stunning aquatic preserve renowned for its archipelago of over 1,800 islands along the Saint Lawrence River between the United States and Canada. Ideal for water-based recreation, the area offers unparalleled opportunities for boating, fishing, and exploring historic sites.

55,000
Acres Protected
Varies
Miles of Trails
Approximately 500,000
Annual Visitors
1904
Year Established

About Thousand Islands Marine National Park

Thousand Islands Marine National Park
 

Thousand Islands Marine National Park boasts a picturesque collection of islands scattered across the Saint Lawrence River, marking the border between the U.S. and Canada. This park's geographic features include rocky shores, lush forests, and freshwater ecosystems that provide habitat for diverse wildlife. Historically, the area has been significant for both Native American tribes and European settlers. Visitors flock to the park for its excellent water-based recreation opportunities, such as kayaking, fishing, and boating. Notable landmarks include Boldt Castle on Heart Island and the renowned Zavicon Island believed to feature the shortest international bridge. The park's charm lies in its ability to offer both adventure and tranquility, making it a beloved destination for nature enthusiasts and history buffs alike.

Highlights

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Boldt Castle on Heart Island

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Thousand Islands Bridge connecting the U.S. and Canada

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Zavicon Island and its iconic bridge

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Diverse bird-watching opportunities

Notable Natural Features

Boldt Castle

A historical landmark built on Heart Island offering guided tours and insights into early 20th-century architecture.

Thousand Islands Bridge

A series of bridges providing scenic views and a vital connection between the U.S. and Canada.

Zavicon Island

Famous for having the shortest international bridge in the world.