Boldt Castle Tours and Tickets

Q: How long is a Boldt Castle tour?

A Boldt Castle tour takes as long as you'd like. The castle does not offer its own guided tours, and self-led tours are at your own pace (accompanied by the castle's dedicated app). Given the castle's scale—and the time needed to access it by water—set aside at least several hours.

Q: Do you need a passport to visit Boldt Castle?

No, visitors coming from the US do not need to show a passport for entry as Boldt Castle is located on Heart Island—part of the Thousand Islands region and within the United States. As it's along the US-Canada border, those coming from Canada should bring passports.

Q: Can you spend the night in Boldt Castle?

No, it is not possible to spend the night at Boldt Castle. The landmark is only open to tourists for daytime visits in season, typically May–October. However, you can stay overnight in the small town of Alexandria Bay, located just across the St. Lawrence River on US soil.

Q: What is the best time of year to visit Boldt Castle?

Boldt Castle is only open to visits for roughly half a year, typically from mid-May to early October. The castle hosts special events, including a Fourth of July fireworks-viewing party, and is likely to be busiest on school breaks and holiday weekends. Visit on weekdays for a calmer experience.

Q: Are there restrooms at Boldt Castle?

Yes, Boldt Castle offers visitors basic amenities, including restrooms. There is also a small concession area which sells drinks and snacks, although these cannot be consumed inside the castle. Visitors are also welcome to picnic outside, though you may not bring any alcohol to the island.

Q: What is the best day to go to Boldt Castle?

That depends on your preferences. Boldt Castle is likely to be busiest on weekends and over holidays like Labor Day and the Fourth of July. For fewer crowds, visit on weekdays. Try to time your trip for a good-weather day to make the most of the surrounding scenery.

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Best Seller

Embark on an unforgettable journey as you explore the enchanting Thousand Islands along the St. Lawrence River. Departing from Clayton, NY (US,) our intimate boat tour invites you to experience over 27 unique miles of stunning scenery and fascinating history. As we navigate US and Canadian waters, our expert local guides will share captivating tales and legends, bringing the rich heritage of the region to life. Get up close to the islands like never before, with exclusive views of opulent million-dollar homes on the famous "Millionaire's Row" and the impressive 1000 Island Bridge System. A highlight of the tour is Heart Island, where you have the opportunity to take a self-guided tour of the majestic Boldt Castle, a monument to George Boldt's enduring love for his wife, Louise. As the tour continues, we journey through the St. Lawrence Seaway, where you might catch a glimpse of oceangoing vessels making their way to the Great Lakes. Experience natural beauty, history, and romance

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4.7

(788)

Boldt Castle and 2 Nation Tour

Free Cancellation
3 hours 30 minutes

from $32

The Ultimate Heart of 1000 Islands Sightseeing Boat Tour

THIS TOUR DEPARTS FROM THE UNITED STATES 2 Nation Lunch Cruise with stops at Boldt Castle and Rock Island Lighthouse. Join us for the ultimate sightseeing tour on the St. Lawrence River. Designed for those who wish to take in the beauty of the 1000 islands Region and experience the the most attractions from the river in an afternoon. This tour includes lunch, combines our Boldt Castle Tour stopping at Heart Island for a tour of Millionaire George Boldt's Rhineland style castle, a cruise through Millionaires Row viewing magnificent summer homes of the rich and famous of the gilded age, and a stop at Rock Island Lighthouse to visit the "Keepers Cottage" Museum & Gift Shop and climb to the top of lighthouse to enjoy the spectacular view of the St. Lawrence Seaway. NO Passports required!

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4.9

(533)

The Ultimate Heart of 1000 Islands Sightseeing Boat Tour

Free Cancellation
5 hours

from $82

Islands, Lighthouses, and Castle Tour on the St. Lawrence River

4.7

(48)

Islands, Lighthouses, and Castle Tour on the St. Lawrence River

Free Cancellation
2 hours

from $27

What are people saying about Boldt Castle

Boldt Castle and 2 Nation Tour

Jianbo_S, Oct 2025

The only challenge was...

The only challenge was that it was hard to hear the guide over the sound of the boat's engine. Aside from that, it was an enjoyable experience.

Boldt Castle and 2 Nation Tour

Cheri_S, Oct 2025

Our Boldt Castle trip

I was understanding that the tickets were paid for with the boat trip, but they apparently were not, and they stated the lunch bags were not paid for so we opted to not to get them. Other that whatever misunderstanding this was because of, the trip was great and the castle and the young tour guide was funny, informative and was very helpf!

Boldt Castle and 2 Nation Tour

Bobbie_S, Oct 2025

Boldt Castle tour

Very interesting. The boat tour and castle tour were timely, friendly and interesting. I would highly eecommend it

Boldt Castle and 2 Nation Tour

Suanne_G, Oct 2025

Delightful afternoon...

Delightful afternoon visit with good narration on the boat tour. Not crowded in fall which was nice!

Boldt Castle and 2 Nation Tour

Paula_B, Sep 2025

Breathtakingly beautiful

The boat ride was a lot of fun and very informative. The 1000 islands are beautiful and the mansions are magnificent! Boldt Castle was incredible. The grounds are breathtakingly beautiful. They are impeccably maintained. An hour and a half is not enough time to experience the inside and the outside. Two hours would be better. All in all, we very much enjoyed the afternoon and Boldt Castle is truly amazing!

Boldt Castle

5.0

(2,339)

New York

Know before you go

Canadian citizens are required to show photo identification upon arrival at Heart Island.
Visitors will find a cafe, a hot dog stand, and picnic tables on the grounds; outside food and drinks are welcome.
Much of the castle is accessible to wheelchairs.

Boldt Castle Tours and Tickets

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What are people saying about Boldt Castle

Boldt Castle

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