Boldt Castle and Yacht House, Alexandria Bay

4.7
#1 of 12 in Things to do in Alexandria Bay
Nestled on an island of the St. Lawrence River, Boldt Castle and Yacht House tells a tragic story of a wealthy couple who never got to live in their lavish estate. Straddling the border between the United States and Canada, the castle came to life in 1900, constructed by millionaire George C. Boldt (owner of the famed Waldorf Astoria Hotel in New York City). It was cancelled in 1904 due to the sudden death of his wife, but construction eventually resumed in 1977. Today you can see some incomplete and some finished rooms, a basement with a swimming pool and bowling lanes, hallways with pictures and artifacts, and a collection of wooden boats. Learn about how electricity was obtained in the early 20th century. Take a guided tour and explore the surrounding grounds. To visit Boldt Castle and Yacht House and get the most from your holiday in Alexandria Bay, create itinerary details personal to you using our Alexandria Bay trip builder site .
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Boldt Castle and Yacht House Reviews
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  • October 4, 2017
    Worth the time and the boat ride to visit. The grounds outside the castle (mid Sept) were beautiful and well maintained. Upon entering the castle you are taken back in time. This is a self guided tour...  more »
  • October 3, 2017
    I was amazed at the grounds and architecture of Boldt Castle on Heart Island. Well worth the time and money. The castle is beautiful! Each room has its own personality, with beautiful draperies and ex...  more »
  • October 3, 2017
    We thoroughly enjoyed our trip to Boldt Castle, even more so than anticipated. The grounds and out buildings are absolutely beautiful, as is the castle itself. I love that the entire castle isn't bein...  more »
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  • June 20, 2017
    It was good to visit. The upper floors aren't done so not a whole lot to see. The outside area is pretty. The food vendors are decent for fast food. CANADIANS: when u get on the dock do NOT pass the yellow line on the dock. It's a $5k fine and boat gets taken away. Stay and wait for guard.
  • July 6, 2017
    This is a very nice castle, and a must see attraction for anybody coming to this area. The castle is open for self-guided tours, which allow you to freely walk throughout the open floors and grounds of the castle. The bridge authority has done an amazing job in restoring this castle, after it was left abandoned for over 70 years. The castle feels new and bright and the flexible schedule with Uncle Sam boats allows you to stay as long as you like and take any boat back. You can really get a sense of how much work it took to build this castle by looking at some of the half completed floors and rooms. They say in employee 300 men working full-time. Not to mention the barges that had to bring all of the materials. There is also the hokey story about the owner, George Boldt, who immediately halted construction on the house when his wife suddenly died at 41 years of age. Since most of his wealth came from her father, I guess there might've been other reasons for him to stop. Her death was mysterious because some people say she died of an overdose of diet pills because she was a little obese. All of these myths add to the story and make this a must see for any visitors to the thousand Islands Region!
  • July 4, 2017
    Beautiful Castle To Visit, it a Wonderful Day. Original Furniture from 1800's it has a Bowling alley & I think a Swimming pool but everything is has ropes so it stays nice, it's been about 10 Yrs since the whole place has been restored. You see Mr Bolt was building this castle & he's Precious Wife died he just stopped all production.
  • June 16, 2017
    My wife and I were married here on June 3rd at the dove cote. The weather was perfect and the outside around the castle looked gorgeous for our pics. The staff was very helpful for the setup and to our guests. I would recommend boldt castle for anyone looking to get married at a picturesque place.
  • July 9, 2017
    I thought it was fascinating.. I love castles, and what he was building, in that time. The bowling lanes, were a surprise to me. Unfortunate, they were renovating and remodeling. People had kind of trashed it, graffiti on the walls.. I'd love to visit again someday..

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