Things to do in Jefferson County

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Jefferson County Travel Guide

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.

Things to do

Kingston Shipwreck Cruise

$38

per adult

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What to do in Jefferson County

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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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