Cruise the St. Lawrence to Boldt Castle and Rock Island Lighthouse on a five-hour sightseeing boat tour from Clayton, NY. Two onshore stops, expert narration, and a included picnic lunch make this an accessible way to experience the Thousand Islands.
More ways to explore the area's outdoor wonders
The St. Lawrence River opens like a bright road of water as the boat slides away from Clayton’s dock; gulls wheel and the current nudges the hull north, daring you to keep watching. On this five-hour cruise you move through shifting light over rocky shoals and between small forested islands, stepping off to walk Boldt Castle’s stone terraces and climb the spiral stairs of Rock Island Lighthouse.
Difficulty
easy
Duration
5 hours
Fitness Level
Suitable for all fitness levels; involves short, level walks during island stops.
Wildlife
History
Boldt Castle was begun in 1900 by hotelier George C. Boldt as a tribute to his wife; construction stopped abruptly after her death, leaving the property unfinished for decades.
Conservation
The Thousand Islands are sensitive to invasive species and shoreline erosion—follow Leave No Trace principles, avoid disturbing shorelines, and respect posted rules on islands.
Reserve your spot on the The Ultimate Heart of 1000 Islands Sightseeing Boat Tour today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Arrive Early for Check-In
Ticket redemption and parking can take time—plan to arrive 30 minutes before departure to avoid last-minute stress.
Bring Motion-Sickness Remedies
The river is generally calm but wakes from freighters can rock smaller vessels; take meds beforehand if you’re susceptible.
Dress in Windproof Layers
Open water is cooler and windier than shore—pack a light wind shell even on warm days.
Reserve Lunch Preferences
Lunch is included but you must confirm dietary requests at least 24 hours before departure.
Windproof Jacket
Protects from spray and brisk river breezes.
spring
Binoculars
Helps pick out architectural details and birdlife across the river.
Sunscreen & Hat
Open-deck exposure can intensify sun—protect skin and eyes.
summer
Motion-Sickness Medication
Useful for sensitive passengers, especially when large freighters pass.