Friends of Fort Knox & Penobscot Narrows Observatory

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740 Fort Knox Road
Prospect, ME 04981

Two Great Attractions at One Site Penobscot Narrows Observatory & Fort Knox State Historic Site Prospect, Maine Open May 1 through October 31 Ride northern Maine’s fastest elevator 420’ feet up for spectacular panoramic views of Penobscot Bay. The Penobscot Narrows Observatory is the tallest bridge observatory in the world (open to the public). Also, explore dark passageways of Historic Fort Knox, one of the best-preserved Civil War seacoast fortifications in New England. Located off US Rte. 1 in Prospect, Maine on the way to or from Bar Harbor. Fort Knox and the Observatory are located 20 minutes from Bangor or 45 minutes from either Bar Harbor or Rockland.