About

Heart Island, nestled within the Thousand Islands region, is a notable part of the Manhattan Group on the US side of the Canada-US border. Known for its picturesque location in the St. Lawrence River, Heart Island is situated south of Deschler Island within the municipality of Alexandria Bay, New York. This island is renowned for being the site of the historic Boldt Castle, an architectural marvel that draws visitors from around the world.

The island, which is sometimes referred to by its alternate name “Hart,” is located in Jefferson County, New York. It occupies a specific geographical position marked by the coordinates 44°20’37″N and 75°55’23″W, placing it squarely within the rich tapestry of the Thousand Islands. The castle and the island have become iconic symbols of the area, offering a glimpse into the region’s history and a unique destination for those exploring the scenic waterways of the St. Lawrence River.

Island or Feature Name
Heart Island

Nationality
US

Centroid Lat/Long
442037N 0755523W

Two-Minute Box
44^22′ x 75^54′

Location and description
In or near The Manhattan Group; site of Boldt Castle, south (upriver) of Deschler Island

Former, informal, or alternate names
“Hart”

Municipality
Alexandria Bay (V)

County
Jefferson

Province / State
NY

Ports?

Book refs

1000islands.co ID #
497

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