Situated on Heart Island in the St. Lawrence River, Boldt Castle is one of the most romantic and picturesque castles in the United States. Built as a symbol of love by millionaire hotelier George C. Boldt for his wife Louise, this castle has captured the imagination of visitors for over a century.
Whether you are exploring the Thousand Islands region or seeking a romantic historic site, Boldt Castle offers a unique combination of history, architecture, and stunning river views.

History of Boldt Castle
Construction of Boldt Castle began in 1900 as a tribute from George C. Boldt to his beloved wife Louise. Tragically, Louise died suddenly in 1904, and work on the castle stopped immediately, leaving the structure incomplete for decades.
The abandoned castle remained in disrepair until the Thousand Islands Bridge Authority purchased it in the 1970s, beginning a restoration process that continues today. The castle has since been transformed into a museum and tourist attraction, allowing visitors to experience its grandeur and romantic legacy.

Architecture and Design
Boldt Castle is a magnificent example of early 20th-century architecture, blending medieval European styles with Gilded Age luxury. Key features include:
- Main Castle: Grand halls, spiral staircases, and intricate stonework.
- Gardens and Fountains: Beautifully landscaped with flowering plants, statues, and reflecting pools.
- Island Setting: Surrounded by the St. Lawrence River, offering breathtaking panoramic views.
- Additional Structures: Boathouse, power house, and gatehouse, all designed to complement the main castle.
Every detail reflects Boldt’s love and devotion, creating a fairy-tale atmosphere that continues to enchant visitors.

Interesting Facts About Boldt Castle
- A Monument to Love: The castle was never completed as intended, but it remains a lasting tribute to George and Louise Boldt.
- Restoration Project: Restoration efforts have preserved the castle’s original charm while allowing public access.
- Tourist Favorite: Accessible by ferry, Boldt Castle attracts thousands of visitors annually.
- Photography Paradise: Its riverfront location and romantic architecture make it one of the most photographed castles in the U.S.
How to Visit Boldt Castle
Location: Heart Island, St. Lawrence River, Thousand Islands, New York.
Access: Visitors must take a ferry from Alexandria Bay or nearby docks.
Opening Hours: Typically open daily from May to October; check the official website for exact hours.
Tickets: Prices range around $20–$25 for adults, with discounts for children and seniors.
The ferry ride itself offers stunning views of the islands, enhancing the experience before even stepping onto the castle grounds.
Best Time to Visit
- Late spring to early fall: Ideal weather and fully operational ferry service.
- Weekdays: Fewer crowds for a more peaceful visit.
- Sunset visits: Beautiful lighting for photography and river views.
Why Visit Boldt Castle
Boldt Castle is a unique American castle experience, combining romance, history, and natural beauty. From the elegance of the main halls to the charm of its riverfront gardens, it’s a destination that appeals to families, couples, and history enthusiasts alike.
Whether touring the Thousand Islands or seeking a romantic getaway, Boldt Castle is a must-see landmark that captures the imagination and heart of every visitor.