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Fort Knox and the Penobscot Narrows Observatory
is open for the 2024 Season!

Fort Knox Historic Site and the Penobscot Narrows Bridge Observatory are open:

- 9am to 5pm in May/June/September/October

- 9am to 6pm in July and August

The Fort itself remains open an hour later than the observatory 

Grounds are open until sunset, weather-depending.

Pets are welcome everywhere (except in the Observatory) if on a 4'-6' leash, cleaned up after, and not a nuisance to other guests. Pets are not allowed to be unattended in your vehicle. 

The Fort Knox Historic Site features one of the best-preserved examples of coastal defense fortifications constructed in the mid-1800s. It is America's first fort named after Major General Henry Knox.  Volunteer docents (experts) provide free interpretive tours (when available) from May 1st through October 31st, between 11 am to 3 pm.  The PNO is the tallest bridge observatory open to the public in the world.  Visitors to the observatory ride Maine's fastest elevator up 420' feet for breathtaking 360-degree views of the Penobscot Bay area.

Please enjoy the slideshow below for a taste of what Fort Knox and the PNO have to offer!

“The Friends of Fort Knox would like to thank everyone for their support as visitors, event attendees, and donors. It is with the help of each and every one of you that we are able to operate, maintain and preserve the Fort Knox Historic Site for future generations!”
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