Prospect is a small town in Waldo County, settled in 1759 and incorporated on February 24, 1794 from a portion of Frankfort. It later set off land to form a part of Searsport (1845) and to form Stockton, now Stockton Springs (1857).
Located on the west bank of the Penobscot River, across from Bucksport, the main village is at the junction of Maine Route 174 and U.S. Route 1A, near the headwaters of the South Branch of the Marsh River.
Prospect is home to Fort Knox, built in 1844 from Mount Waldo granite from neighboring Frankfort and named for Henry Knox, the first U.S. Secretary of War. Notable for its brick arches and underground passages, it was built as a defense in the Aroostook War.
