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Department of Conservation Bureau of Parks & Lands

Home > Penobscot Narrows Observatory

Fort Knox on the Penobscot

A remarkable example of Third-System military architecture and a National Historic Landmark


From May 1 to October 31 each year, the Penobscot Narrows Observatory tower at Fort Knox is open to the public from 9 am to 5 pm, 7 days a week. It closes at 6 pm in July and August.

Visit the Fort Knox Research Room by clicking here

The Bureau of Parks and Lands manages the fort in partnership with the Friends of Fort Knox.