Official Boldt Castle Website - Alexandria Bay NY in the Heart of the 1000 Islands

1000 Islands NY tour St. Lawrence River

  • Welcome
  • Visiting
    • Plan Your Visit
    • Rules Of Boldt Facilities
    • Hospitality
    • Photography
  • Virtual Tour
    • Download the Boldt Castle App
    • The Alster Tower
    • The Castle
    • The Castle Interior
    • The Dove-Cote
    • The Entry Arch
    • The Gardens & Grounds
    • The Gazebo
    • The Power House
    • Renovations
    • Kestrel 1892 Steam Yacht
  • Weddings
  • History
  • News & Events
    • Independence Day Fireworks
    • Economic Impact in Region
  • Yacht House
  • Downloads
    • Download the Boldt Castle App
    • Literature
    • Photo Gallery
    • Videos
    • Wallpapers
  • Employment

The Castle

Accessible by water taxi, tour boats and private boat, the castle is open for self-guided tours from mid-May through mid-October.  The five-acre island is fully handicapped accessible, has complete restroom facilities, extensive docking for  private boats, several picnic areas, a gift shop, and a food and beverage concession.

There are six impressive structures to explore on Heart Island the Castle, the Power House, the Alster Tower, the Hennery, the Arch, and a stone Gazebo. Exhibits in the various structures and a 15 minute video presentation offer a look into the lifestyle of George and Louise Boldt, along with a history of the 1000 Islands Region and the restoration efforts on Heart Island.

Inside the Castle the first floor has been restored to reflect George and Louise Boldt’s intended finished interior complete with furnishings.

Hundreds of windows have been replaced and beautiful custom made doors and decorative windows now enhance the entrances. The Castle rises six stories from the foundation level of the indoor pool to the highest towered room.

2025 Dates & Hours of Operation:

    Boldt Castle & Boldt Yacht House

    • May 10 - October 13:

      10:30 AM - 6:30 PM

    • Admissions Booth closes 1 hour prior to Boldt Castle closing.

    Special Hours:

    Boldt Castle and Yacht House will remain open until 7:30pm on Independence Day Weekend on Friday, July 4th and Saturday, July 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.

    **We accept major credit cards and US cash.**

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Web site courtesy of the:
Thousand Islands Bridge Authority / Boldt Castle
PO Box 428, Collins Landing
Alexandria Bay, NY 13607

In Season: 315-482-9724
Off Season: 315-482-2501

Coordinates:
+44° 20' 40.29" N, -75° 55' 21.27" W

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