Boldt Castle's Official 2020 Hours of Operation

Boldt Castle on Heart Island with Uncle Sam Tour Boat passing by

The Alexandria Belle seen here passing in front of Heart Island and magnificent Boldt Castle.

All of Uncle Sam Boat Tours daily cruises stop at Boldt Castle, with a few exceptions due to the Castle schedule. Tickets may be purchased at our ticket booths or at Heart Island for the same rate for your convenience. For the convenience of our customers here are the official admission cost and hours of operation at Boldt Castle for 2020.


Please note that the Uncle Sam Boat Tours shuttle will not bring new visitors to Heart Island 1.5 hours before Boldt Castle’s stated closing time.

Click here for more information about shuttle service too and from Boldt Castle
Click here for information about the history of Boldt Castle

Boldt Castle Rates:

These rates are in addition to all Uncle Sam Cruise Rates. Tickets for Boldt Castle can be purchased at the Uncle Sam Boat Tours Ticket Booth or at Heart Island for the same rate.

Adult – $10.00 (13+ years) Child – $7.00 (5-12 years) Infant – $0.00 (4 years and under) US Funds

Boldt Castle offers no discounts for military or seniors.

No Pets are allowed on Heart Island or the Boldt Yacht House with the exception of registered service animals.

Boldt Castle Hours of Operation:

Boldt Castle

  • May 9 – June 19:

    10 AM – 6:30 PM

  • June 20 – August 30:

    10 AM – 7:30 PM

  • August 31 – September 20:

    10 AM – 6:30 PM

  • September 21 – October 4

  • 10:0 AM – 5:30 PM

  • October 5 – October 18:

    11 AM – 5:00 PM

Special Hours:

The Castle will remain open until 7:30 PM for Memorial Day Weekend, May 23rd and 24th, Labor Day Weekend, September 5th and September 6th. In addition, Boldt Castle will be open 10AM until 6:30 PM on Columbus Day/Canadian Thanksgiving Weekend October 10th and 11th, 2020.

Boldt Castle Yacht House Boldt Yacht House:

  • May 9 – September 20:

    10:30 AM – 6:30 PM

  • September 21 – October 18:

    Hours parallel that of Boldt Castle