High Quality Content by WIKIPEDIA articles! This is a list of state parks and state historic sites in Missouri. In the state of Missouri both state parks and state historic sites are administered by the Division of State Parks of the Missouri Department of Natural Resources. The division manages 83 parks and historic sites plus the Roger Pryor Pioneer Backcountry, which together total more than 200,000 acres (809 km2). According to the state its parks system includes approximately 3,700 campsites, 194 cabins, and 840 miles (1,350 km) of trails, including the longest developed rails-to-trails project in the nation.