Bear Brook State Park is a 10,000-acre (4,000 ha) preserve in Allenstown, New Hampshire, and neighboring towns. It is one of New Hampshire's largest state parks. Amenities at Bear Brook include camp sites, a picnic area, over 40 miles (64 km) of hiking trails, swimming and fishing ponds, archery range, camp store, a ball field, playground, bathhouse, shelters, picnic tables, canoe and rowboat rentals, and a physical fitness course. The park is home to the New Hampshire Snowmobile Museum, Old Allenstown Meeting House, and the Richard Diehl Civilian Conservation Corps (CCC) Museum, which are in historic buildings built by the Civilian Conservation Corps.