1. Trail of Tears State Park in Cape Girardeau County. The 3,415-acre park is a memorial to the Cherokee Indians who lost their lives in a forced relocation, as well as a place for visitors to participate in a variety of outdoor adventures including hiking, backpacking, camping, fishing and picnicking.
4. Lake Wappapello State Park in Williamsville, Mo. The 1,854-acre state park offers camping, fishing, lodging, picnicking, swimming and hiking, equestrian, mountain biking and backpacking trails.
5. Cape La Croix RECREATION Trail runs throughout Cape Girardeau, beginning near the intersection of Lexington Avenue and Kingshighway, and is great for walking and biking.
7. Land between the lakes at Golden Pond, Ky., offers biking, camping and other forms of recreation, as well as an elk and bison prairie and a planetarium.
8. Tower Rock in Perry County is a majestic landmark of limestone rock that towers more than 90 feet above the Mississippi River bed. The water is turbulent as it passes around the rock, which has prompted centuries of legends and the respect and fear of rivermen.
9. Otter Slough, along Route ZZ in Stoddard County, has 4,866 acres managed primarily for species associated with wetlands. Migratory waterfowl, herons, egrets and many kinds of shorebirds are found here. Also seen at Otter Slough are mink, otter and other water-loving animals.
12. Ben Cash Conservation Area in Dunklin County is a 1,300-acre wildlife area on the St. Francis River, and is one of the few remaining vestiges of bottomland hardwood trees. It also contains an extremely diversified floral community.
13. BIG SPRING NATIONAL PARK, three miles outside Van Buren, Mo., is the largest spring in the state, and one of the largest in the world. On an average day, some 278 million gallons of water gush forth from subterranean passages, swelling the nearby Current River.
15. Located in Dunklin County near Kennett, Mo., the 1,066 acres at Little River Conservation Area provide opportunities for outdoor recreation. The wetlands attract many migratory birds, making it great for birdwatching and photography.
16. Peck Ranch Conservation Area is in northwest Carter County and eastern Shannon County, north of Fremont, Mo. The area consists of 23,048 acres of rugged, forested hills and hollows.
18. Explore the beautiful cave formations and the silent beauty of the underground world at Round Spring Cavern in Eminence, Mo.
19. Bonne Terre Mine, a national historic site in Bonne Terre, Mo., is the world's largest freshwater dive resort. The mine is listed as one of America's Top 10 Greatest Adventures by National Geographic. Boat tours and walking tours are available.
20. Tunnel hill state trail, extending from Harrisburg to Karmak, Ill., follows an abandoned railroad right-of-way dating to 1872. Scenery along the bike trail ranges from flat farmland and lush wetlands to the dense Shawnee National Forest, and is home to countless species of wildlife and wildflowers. The trail even includes 23 trestles and a 543-foot tunnel.