Boldt Castle Tours and Tickets

There are a few ways to experience Boldt Castle. Looking at ratings and reviews previously given by customers, these are the best tours available right now:

• Boldt Castle and 2 Nation Tour

• The Ultimate Heart of 1000 Islands Sightseeing Boat Tour

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

Admission to Boldt Castle costs US$14 for adults, US$10 for kids (ages 5–12 years), and is free for under-5s. Admission to the Yacht House is US$8.50 for adults and US$6 for kids. Combo tickets to both cost US$17 for adults and US$10 for kids.

Yes, Boldt Castle is worth visiting while exploring the New York side of the St. Lawrence River and Thousand Islands. The circa 1900 "castle" on an island was built as the summer residence of a wealthy businessman and reflects old European and British design—ideal if you're interested in history, architecture, or design.

Per one customer who booked the Boldt Castle and 2 Nation Tour, "Wonderful experience! Our tour guide was extremely knowledgeable, friendly, and interesting. The boat cruise was fascinating and the time at Boldt Castle wonderful. We wish the time on Heart Island would have been longer but thoroughly enjoyed ourselves."

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.

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.

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.

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.

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.

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.

There are tons of fun things to do when you're done visiting Boldt Castle. According to travelers, these are some of the top attractions in New York:

• Statue of Liberty

• Empire State Building

• Central Park

• Ellis Island

• National September 11 Memorial & Museum

View Viator's guide to all the best attractions in New York.