Covering 1,500 acres, Peace Valley Park is an oasis of nature just north of Doylestown. This county park offers boating, fishing, picnicking and more. The heart of the park is Lake Galena, a 365-acre, man-made lake created by the damming of part of the Neshaminy Creek. The paved trail circling the lake is popular with walkers, runners and bicyclists. The total loop is about six miles.