Fort O’Brien State Historic Site 
Route 92
Bangor, ME 04401
207-941-4014
http://www.maine.gov/cgi-bin/online/doc/parksearch/search_name.pl?state_park=&historic_site=61&public_reserved_land=&shared_use_trails=&option=search
State Park: Birding, Hike, History, Picnic, Walk, Water Sports
Fort O’Brien (Fort Machias) was built in 1775 and destroyed by the British in the same year. This state historic site is one of few Maine forts active during three wars – the American Revolution, War of 1812 and Civil War. Fort O’Brien’s layout was altered several times over the 90 years it was active on this site. But the fort’s important role in protecting the Machias River and its towns remained unchanged.