Warren has a rich history and an architectural heritage to match its enviable location. Founded in 1795 and named for General Joseph Warren, who was killed in the Battle of Bunker Hill, the city is a gateway to the Allegheny National Forest and boasts 21 parks in 180 acres. In 1861, the discovery of oil led to great wealth. Warren was once home to more millionaires per capita than any other town in the state; many of their mansions still stand. The city's historic district is 28 blocks long and contains more than 600 historic buildings. The nearby Kinzua Dam holds back the vast Allegheny Reservoir, where locals and visitors alike enjoy swimming, boating, fishing, and water-skiing.