What to do in Jefferson County, NY

Activities, attractions and tours

A historic stone castle on a lakeside island with a clear sky.
A stone castle with towers on a lakeside island, surrounded by trees and a larger building in the background.
A stone castle with multiple towers by a calm lake, surrounded by lush greenery and a partly cloudy sky.
A historic mansion with a red roof and stone towers by a lake.
A stone structure with a statue on top by a waterfront.

Activities

Boldt Castle and 2 Nation Tour

Boldt Castle and 2 Nation Tour

NZ$56
per adult
82% of travellers recommend
Boldt Castle and 2 Nation Tour
Rockport, ON: 1000 Islands /Boldt Castle Sightseeing Cruises

Rockport, ON: 1000 Islands /Boldt Castle Sightseeing Cruises

NZ$52
per adult
Rockport, ON: 1000 Islands /Boldt Castle Sightseeing Cruises
Kingston Shipwreck Cruise

Kingston Shipwreck Cruise

NZ$65
per adult
Kingston Shipwreck Cruise
Heart of the 1000 Islands Sightseeing Cruise

Heart of the 1000 Islands Sightseeing Cruise

NZ$88
per adult
Heart of the 1000 Islands Sightseeing Cruise
Kingston: Ghosts and Mysteries Trolley Tour

Kingston: Ghosts and Mysteries Trolley Tour

NZ$68
per adult
84% of travellers recommend
Kingston: Ghosts and Mysteries Trolley Tour
Ghost and Mystery Trolley Tour

Ghost and Mystery Trolley Tour

NZ$68
per adult
Ghost and Mystery Trolley Tour
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What to do in Jefferson County

Stay near popular Jefferson County attractions

A historic stone castle on a lakeside island with a clear sky.

Boldt Castle

9.4/10 (1,063 reviews)
After visiting Boldt Castle, make a plan to see the other sights and activities in Alexandria Bay. Amble around the area's riverfront or seek out the local tours.
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Day trip destinations from Jefferson County

A coastal landscape with a lighthouse, white houses, and a ship in the distance.

Sackets Harbor

An aerial view of a cityscape with various buildings, roads, and a central roundabout.

Evans Mills

A suspension bridge over a calm river, surrounded by dense forest.

Wellesley Island

A person ice climbing on a frozen waterfall surrounded by snow and trees.

Adams

A waterfall with people standing in the water.

Dexter

A person walking a dog by a calm river with trees in the background.

Glen Park