Cruise 27 miles of the Thousand Islands, cross into Canadian waters without a passport, and explore Boldt Castle on Heart Island. This guided boat tour pairs Gilded Age history with shoreline geology and wildlife viewing.
More ways to explore the area's outdoor wonders
The boat slips away from Clayton’s blue ticket booth and the St. Lawrence opens like a navigable map of stone and water. Islands rise as low, wind-scoured bluffs and manicured lawns; the engine’s steady thrum keeps time while gulls wheel and an osprey hovers above a channel that dares you to stare.
Difficulty
easy
Duration
3–3.5 hours
Fitness Level
Suitable for all fitness levels; able to board a small craft and move across a few steps
Wildlife
History
Boldt Castle was begun by George Boldt in the early 20th century and left incomplete for decades after his wife’s death; the islands hosted steamboats, bootleggers, and Gilded Age summer communities.
Conservation
The Thousand Islands’ shorelines are sensitive; follow no-wake zones, avoid landing on private islands, and be mindful of invasive species like zebra mussels when moving equipment between water bodies.
Reserve your spot on the Boldt Castle and 2 Nation Tour today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Arrive 30 minutes early
Check in at the blue ticket booth at 39611 Chateau Lane to collect your boarding pass and secure preferred seating.
Boldt Castle tickets sold separately
Purchase castle admission at the ticket booth in advance or on arrival — entry is not included in the cruise fare.
Dress in layers and bring sun protection
Wind on the water can be cool even on hot days; pack a light jacket and sunscreen.
Bring binoculars
A small pair of binoculars reveals architectural detail on island homes and distant wildlife.
Light waterproof jacket
Blocks wind and spray while cruising open stretches of the St. Lawrence.
Sunglasses & sunscreen
Protects eyes and skin from reflected sunlight off the water.
summer
Binoculars
Essential for spotting eagles, herons, and architectural details from the boat.
Small daypack or tote
Keeps tickets, water, camera, and layers organized on deck.