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Regular Operating Hours:
  • May 1 thru June 30 - Fort Knox Historic Site* and Observatory open from 9 am to 5 pmFort itself remains open until 6 pm
                   

  • July 1 thru August 31 - Fort Knox Historic Site* and Observatory open from 9 am to 6 pm - Fort itself remains open until 7 pm
     

  • September 1 thru October 31 - Fort Knox Historic Site* and Observatory open from 9 am to 5 pm - Fort itself remains open until 6 pm or sunset (whichever is earlier)

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  • November 1 thru April 30 - Fort Knox Historic Site* and Observatory are closed. However, the park grounds are open 9 am to sunset.

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  • Park grounds are open from 9 am to sunset — today, tomorrow, and every day - Year-round (weather depending)! â€‹

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*Fort Knox Historic Site includes the Fort, Observatory and amenities like the gift shop & guest education/museum center. 

Please visit the Events Pages for dates and details of additional activities like Civil War Days!

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2025
Entrance Fees
  
(updated April 25, 2025)
  • Fort & Park Only entry:​

    • Maine Resident Adults (12 - 65yrs)  -  $4.50

    • Maine Resident Seniors (65+ yrs)    -    Free

    • Nonresident Adults                        -  $6.50

    • Nonresident Seniors                      -  $3.00

    • Children (5 - 11yrs)                       -  $2.50

  • Fort & Park entry plus Observatory Elevator Ticket:

    • Maine Resident Adults (12 - 65yrs)  -  $7.50

    • Maine Resident Seniors (65+ yrs)    -  $3.00

    • Nonresident Adults                        -  $9.50

    • Nonresident Seniors                      -  $6.00

    • Children (5 - 11yrs)                       -  $5.50

Park Admission & Observatory tickets can ONLY be purchased on-site at the Fort Knox's gate booth upon entry.                         No on-llne tickets available!

When you visit the Fort and Observatory, stop in the Guest Education Center, which includes a free museum and the Gift Shop for snacks & souvenirs! 
 

Contact:

Phone: 207-469-6553

740 Fort Knox Road, Prospect, Maine 04981

Email: Info@FortKnoxMaine.com

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Copyright 2025 - Fort Knox and the Penobscot Narrows Bridge

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