The Penobscot Narrows, near where the Penobscot River flows into the Atlantic Ocean, were a strategically important site during early American Republic. The area was at the center of border disputes with British Canada, and the region was invaded and occupied by the British during the War of 1812. An impressive fortification, Fort Knox, was built on the west bank of the Penobscot River to defend against a potential British naval assault.
The fort never saw combat. It was built between 1844 and 1869, by which point the border with Canada was settled and the British threat had receded. Today it’s one of the best-preserved military fortifications on the New England seacoast. You can walk the grounds of the fort, explore some of the buildings, and visit the small museum that records the fort’s history.
The nearby Penobscot Narrows Bridge Observatory involves an elevator ride up 420 feet for incredible 360-degree views of Penobscot Bay.
Hours
Daily, May 1 – June 30: Fort open 9 – 6; observatory open 9 – 5
Daily, July 1 – August 31: Fort open 9 – 7; observatory open 9 – 6
Daily, September 30 – October 31: Fort open 9 – 6; observatory open 9 – 5
The fort and observatory are closed November – April, but the grounds remain open 9am – sunset
Admission
Fort Only:
Nonresidents: $6.50 (Seniors 65+ $3)
Maine residents: $4.50 (Seniors 65+ free)
Children 5-11: $2.50
Fort and Observatory:
Nonresidents: $9.00 (Seniors 65+ $5.50)
Maine residents: $7.00 (Seniors 65+ $2.50)
Children 5-11: $5.00