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Boldt Castle and Boldt Yacht House

Boldt castle aerial view at night
Heart Island
Alexandria Bay, NY 13607
Boldt castle aerial view at night


Historic Sites


Group visits to Boldt Castle and Boldt Yacht House offer a perfect addition to a St. Lawrence River tour.  To hear this amazing story while walking the grounds to see the loving workmanship and attention to detail will create a memory your group will talk about for years.  Friendly docents can be found all around the island to interact with your group and provide information on the castle and insight into the Boldt family.

Manicured gardens and brick paved walkways with amazing views of the St. Lawrence Seaway lead your group from one stunning sight to another on this 5-acre island. Within the main castle the Grand Staircase leads to the upper floors or there is an elevator to all floors for ease and comfort of your guests.

Light, summer lunchtime fare is available at the cafe offering snacks, drinks, ice cream, coffee and more.  Souvenirs and specialty gifts can be found in the giftshop.

Transportation available through our partner boat tour companies.