Fort Knox Historic Site and the Penobscot Narrows Observatory are now OPEN!
Observatory tickets are only sold on-site
with park entry fee at the Fort Knox Historic Site gate booth. Observatory reservations or advance purchase is only available for groups of 20 visitors or more.
Come and join us for the best views in Maine!
Fort Knox Historic Site and the Penobscot Narrows Bridge & Observatory are open daily May through October, 9am until 5pm in May/June/Sept/Oct and until 6pm in July and August. The Fort remains open an hour later and the grounds remain open until sunset. Dogs are welcome if on a 4'-6' leash, cleaned up after and not a nuisance to other guests. Please do not leave pets unattended in your vehicle. We can only allow service dogs in the Observatory elevator.
Call 207-469-6553 or email for information!
The Friends of Fort Knox would like to thank everyone for their support as visitors, event attendees and donors helping us to operate, maintain and preserve the Fort Knox Historic Site for future generations!
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. We try to offer free interpretive guided tours provided by volunteers when available between 11am to 3pm. Reservations for special events (weddings, family gatherings, reunions, business retreats) and group tours may be arranged by calling 207-469-6553 or . During the off season (November 1st to April 30th) Grounds are open from 9am to 4pm - weather dependent. 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!