
Discover America's Original Fort Knox - Prospect, Maine
Fort Knox Historic Site and the
Penobscot Narrows Bridge Observatory are
both OPEN for the season through Oct 31st, 2022!
Regular Operating Hours
May 1 thru June 30 - Fort* and Observatory open 9am to 5pm
Fort* remains open until 6pm
July 1 thru August 31- Fort * and Observatory open 9am to 6pm
Fort* remains open until 7pm
September 1 thru October 31- Fort* and Observatory open 9am to 5pm
Fort* remains open until 6pm or sunset (whichever is earlier)
Today, tomorrow, every day! Year round! Grounds open 9am to sunset
*Fort includes the Fort itself, grounds, gift shop & visitor/education center.
Please visit the Events Pages for details on dates and activities!
2022 Entrance Fees
Fort only entry: Children (5-11yo) - $2.50
- Maine Residents Adults (12-65) - $4.50, Seniors (65+) - Free,
- Nonresident adults - $6.50, Nonresident Seniors - $3.00
Fort and Observatory entry: Children (5-11yo) - $5.00
- Maine Resident Adults (12-65) - $7.00, Seniors (65+) - $2.50
- Nonresident adults - $9.00, Nonresident Seniors - $5.50
Call 207-469-6553 or email info@fortknoxmaine.com for inquiries.