Boldt Castle & Boldt Yacht House

1000 Islands

Opens for the Season May 9th, 2020!

“If you haven’t seen Boldt Castle lately, you haven’t seen Boldt Castle.”

Today Boldt Castle, located near Alexandria Bay, NY in the famed 1000 Islands is once again becoming what it was always meant to be, the premier home and attraction in the region. Whether you are making an annual visit to see what’s new, looking for an affordable family vacation close to home or a couple seeking that romantic getaway, Boldt Castle and the Boldt Yacht House has something for you! In fact, the Castles’ legendary beauty nestled among the St Lawrence Rivers’ 1000 Islands will keep you returning year after year!

The Thousand Islands Bridge Authority (TIBA) welcomes you to tour Boldt Castle to explore and experience an attraction like no other. Construction began on Boldt Castle in 1900 at the bidding of millionaire hotel magnate George C. Boldt as a tribute to his beloved wife Louise. Boldt Castle was designed as their summer dream home. A castle rivaling those of Europe, built on the St. Lawrence River, in the heart of the 1000 Islands. However it was not to be, Mrs. Boldt passed away suddenly just months before the completion of the castle. Mr. Boldt was inconsolable and immediately stopped all construction on Heart Island, leaving the property vacant for over seventy years…

Web Site

Useful information

Boldt Castle
1 Heart Island,
Alexandria Bay, NY 13607 USA
Tel.: In season: 315-482-9724
Tel.: Off season: 315-482-2501

2023 Dates & Hours of Operation

Boldt Castle & Boldt Yacht House
May 8 - October 11:

10:30 AM - 6:30 PM
Special Hours:
Boldt Castle will remain open until 7:30pm on Independence Day Weekend on Saturday, July 3rd and Sunday, July 4th and remain open until 7:30pm on Labor Day Weekend on Saturday, September 4th and Sunday, September 5th.

For more info: 315.482.9724
Boat tours from both the U.S. and Canada stop at Heart Island. Extensive docking is available for private pleasure craft. A shuttle from Heart Island provides access to the Boldt Castle Yacht House.

Please Note: The Castle does not have climate control. Please dress appropriately for the weather.

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