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Boldt Castle, Breathtaking Crown Jewel of the 1000 Islands

Boldt Castle, Breathtaking Crown Jewel of the 1000 Islands
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The Boldt Castle is a major landmark and tourist attraction in the Thousand Islands region of the US state of New York. The landmark is open to guests between May and October.

Located on Heart Island in the Saint Lawrence River. The castle was built by George Boldt, the general manager of the Waldorf-Astoria hotel. His family enjoyed an earlier frame cottage on Hart Island for several summers. But he greatly expanded on that.

He launched his campaign to build the castle in 1900. His idea was to build the largest private home in the United States. The result is the huge masonry structure known as Boldt castle. Take a look at it.

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Quick Recap

Bestseller No. 1
Per Diem Printing Castle Postcard Bulk Pack of 25
Per Diem Printing Castle Postcard Bulk Pack of 25
Standard Postcard Dimensions: Each post card measures 6" x 4"; Generous Bulk Pack: Set contains 25 post cards - One of each
$9.99
Bestseller No. 2
Boldt Castle, Thousand Islands, NY Thousand Islands, New York Original Antique Postcard
Boldt Castle, Thousand Islands, NY Thousand Islands, New York Original Antique Postcard
Categories: US State & Town Views,New York,Thousand Islands; Type: Postcard; Size: 3.5" x 5.5" (9 x 14 cm)
$5.99
Bestseller No. 4
Boldt Castle Thousand Islands, New York NY Original Vintage Postcard
Boldt Castle Thousand Islands, New York NY Original Vintage Postcard
Categories: US State & Town Views,New York,Thousand Islands; Type: Postcard; Size: 3.5" x 5.5" (9 x 14 cm)
$5.99
Bestseller No. 5
Alster Tower of Boldt Castle Alexandria Bay, New York NY Original Vintage Postcard
Alster Tower of Boldt Castle Alexandria Bay, New York NY Original Vintage Postcard
Categories: US State & Town Views,New York,Alexandria Bay; Type: Postcard; Size: 3.5" x 5.5" (9 x 14 cm)
$5.99
Also popular on Amazon
Alster Tower of Boldt Castle Alexandria Bay, New York NY Original Vintage Postcard
  • Categories: US State & Town Views,New York,Alexandria Bay
  • Type: Postcard
  • Size: 3.5" x 5.5" (9 x 14 cm)
  • Publisher: Wm. Jubb Co., Inc.
Also popular on Amazon
Boldt Castle Thousand Islands, New York NY Original Vintage Postcard
  • Categories: US State & Town Views,New York,Thousand Islands
  • Type: Postcard
  • Size: 3.5" x 5.5" (9 x 14 cm)
  • Publisher: Marks & Fuller, Inc
Also popular on Amazon
Boldt Castle, Thousand Islands, NY Thousand Islands, New York Original Antique Postcard
  • Categories: US State & Town Views,New York,Thousand Islands
  • Type: Postcard
  • Size: 3.5" x 5.5" (9 x 14 cm)
  • Publisher: Hallam B. Vesty
Popular on Amazon
Per Diem Printing Castle Postcard Bulk Pack of 25
  • Standard Postcard Dimensions: Each post card measures 6" x 4"
  • Generous Bulk Pack: Set contains 25 post cards - One of each
  • Versatile Uses: Suitable for collectors, scrapbooking, post crossing, school postcard exchange projects, invitations, or just sending a note to a friend
  • Informative Design: Each card contains the name of the castle and a location
  • Premium Quality Material: High quality paper stock
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply. Prices as of October 28, 2026 6:24 pm GMT+0530.
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