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5 star rating: Highly Recommended 6 Reviews

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  • Address: Alexandria Bay, New York, USA
  • Hours: Vary by season
  • Admission: Adults: $8.50; Children: $6 (ages 6-12)

New York ATTRACTIONS See all

Boldt Castle Tours

Built in the early 20th century in the middle of Heart Island, Boldt Castle is one of the main tourist attractions of the Thousand Islands in the Saint Lawrence River.

George Boldt began building the 120-room castle in 1900 for his wife, and when she died four years later all work on the building stopped. It was left empty and open to the elements for more than 70 years. The castle was purchased in 1977 and has been restored as a local attraction. The first floor of the castle is meant to show how the Boldt family would have decorated it, had they ever moved in.

The castle itself sits in the middle of Heart Island, but there are other buildings that make up the estate – including a castle-like “power house” with a small stone bridge and a tower building at the water's edge that was originally designed to be an entertainment area for guests.

Practical Info

Visitors get to Heart Island by boat (if you own a boat, you can dock there for free) from either the U.S. or Canada, and some of the grounds and buildings are open to the public. Entry to these areas is $8.50 for adults and $6 for children ages 6-12. The castle is open for self-guided tours from mid-May through mid-October; the open hours vary by month, but it's typically open between 10-11am and closes between 5-7:30pm.
 

Tours & Tickets

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Boldt Castle and Thousand Islands Helicopter Tour, Thousand Islands, null
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 5

Boldt Castle and Thousand Islands Helicopter Tour

5 star rating: Highly Recommended 3 Reviews

Embark on helicopter tour of the Thousand Islands and get a birds-eye view of Boldt Castle. See the beauty, romance, and grandeur of the Thousand Islands from ...  Read more

Location: Gananoque, Canada
Duration: 20 minutes (approx.)

From USD $136.87
Thousand Island Helicopter Tour Including Boldt and Singer Castles, Thousand Islands, Helicopter ... 
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 5

Thousand Island Helicopter Tour Including Boldt and Singer Castles

5 star rating: Highly Recommended 1 Review

See the beauty, romance, and grandeur of Ontario's Thousand Islands from the air on this 30-minute helicopter tour. Feel the excitement from lift off to ...  Read more

Location: Gananoque, Canada
Duration: 30 minutes (approx.)

From USD $210.36
St Lawrence River Cruise with Optional Boldt Castle Tour, Clayton, Helicopter Tours
TVRM_SORTED : true ESSENTIAL : 2 ADMISSION : 5

St Lawrence River Cruise with Optional Boldt Castle Tour

5 star rating: Highly Recommended 25 Reviews

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, ...  Read more

Location: New York State, New York
Duration: 3 hours 30 minutes (approx.)

From USD $22.00
Ultimate Thousand Islands Helicopter Tour, Thousand Islands, Day Cruises
TVRM_SORTED : true ESSENTIAL : 2 ADMISSION : 5

Ultimate Thousand Islands Helicopter Tour

This Ultimate Thousand Islands helicopter tour shows you all that the 1000 Islands have to offer! See the beauty, romance, and grandeur of the Thousand Islands ...  Read more

Location: Gananoque, Canada
Duration: 60 minutes (approx.)

From USD $413.36

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