What to do in St Lawrence County, NY

Activities, attractions and tours

A turbulent river flowing over rocks in a forested area.
A stone castle with red-tiled roofs, a stone bridge, and lush greenery.
A rocky shoreline with a calm lake, surrounded by dense forest and a clear sky.
A mountainous landscape with a lake surrounded by autumn-colored forests.
A waterfall cascading into a calm river surrounded by autumn-colored trees.

Things to do

The Ultimate Heart of 1000 Islands Sightseeing Boat Tour

The Ultimate Heart of 1000 Islands Sightseeing Boat Tour

CA $119
per adult
94% of travellers recommend
The Ultimate Heart of 1000 Islands Sightseeing Boat Tour
Toronto, Niagara Falls & Thousand Islands 3–DAY Trip

Toronto, Niagara Falls & Thousand Islands 3–DAY Trip

CA $880
per adult
Toronto, Niagara Falls & Thousand Islands 3–DAY Trip
See all activities in St Lawrence County
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What to do in St Lawrence County

Stay near popular St Lawrence County attractions

A stone castle with red-tiled roofs, a stone bridge, and lush greenery.
Photo by Ann Sair
Open Photo by Ann Sair

Singer Castle

9.0/10 (77 reviews)
You can learn about the history of Hammond with a stop at Singer Castle. While you're in the area, stroll along the riverfront.
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Day trip destinations from St Lawrence County

A cargo ship passing through a lock gate on a river.

Massena

A wooden pier with a lighthouse in the background and a bridge across the water.

Ogdensburg

A historic church with a tall tower and a reflection in the water.

Potsdam

A memorial with a flagpole, a cannon, and a flag.

Morrisburg

A government building with a flag, a fountain, and a statue in front.

Brockville

A calm lake with a rocky shore, surrounded by dense trees and a small building.

Cornwall

A herd of cows grazing in a field with a backdrop of autumn-colored trees.

Hogansburg

A wooden pier extending into calm water with a bridge and lighthouse in the background.

Prescott