St Lawrence River Cruise with Optional Boldt Castle Tour

Cruises, Sailing & Water Tours in USA
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Information from Viator

Tour description

Castles, wealth and water. That’s what this informative 3-hour 30-minute tour on the St Lawrence River is all about. Cruise the wide, island-filled river, puttering along the Canadian shore as a guide describes the intriguing history of the area and some of the rich and famous people who have settled here through the decades. Dock at Heart Island and walk to where the imposing Boldt Castle sits. Take a self-guided tour of the castle (admission charge not included) or just explore the island before getting back on the boat and returning to Clayton.

Enjoy an intimate boat tour as you travel over 22 unique miles among many of the 1000 Islands along the St. Lawrence River. The tour begins in Clayton miles south of Boldt Castle, travel up the American Channel of the St. Lawrence Seaway. Your professional guides will share rich history, legends and lore as you get up close to the islands allowing adults and children the ability to spot local wildlife.

This international tour will include views of Magnificent Million Dollar Summer Homes on both the US and Canadian shorelines, travel under both the American and Canadian spans of the 1000 Island Bridge System, and pass Rock Island Lightouse State Park.

At Heart Island, you have the option to disembark and enjoy a self-guided tour of Boldt Castle (admission fee not included).

Returning to Clayton through the Canadian Channel of the St. Lawrence River, you will travel by the smallest international bridge, through the whirlpools of “the lost channel,” pass by Tom Thumb Island, the Statue of St. Lawrence, through Eel Bay, and wind through the islands in front of Clayton, the real Heart of the Thousand Islands.

Disembark back in Clayton after a memorable cruise.

What's included

  • Sightseeing boat cruise 
  • Local naturalist guide

What's not included

  • Entrance fees for Boldt Castle
  • Hotel pickup and drop-off
  • Food and drinks


  • Travel by boat and see the sights from the water
  • Choice of morning or afternoon departure
  • Fully narrated tour
  • Led by a local guide
  • Ideal choice for families