East Machias, US
Fort Foster was a military site of the American Revolutionary War in what is now East Machias, Maine. Little more than a large earthworks, it was located on The Rim, a neck of land that commands the confluence of the Machias and East Machias Rivers. The earthworks were built in 1776, and attacked by
British forces in the 1777 Battle of Machias. The site was listed on the National Register of Historic Places in 1973.
Listen to the audio guide for Fort Foster Free on WIP — starts by itself when you arrive, even with the screen off