Collier-Seminole State Park is a 4,760-acre wilderness preserve, offering a 0.9-mile interpretive boardwalk/nature trail, RV and tent camping, a 5 1/2-mile mountain-bike trail, a 6 1/2-mile hiking trail, canoe rentals, a 13 1/2-mile aquatic trail, playground, picnic area, pontoon boat tours and historical displays, including a huge "walking" dredge, a National Historic Engineering Landmark. Location: 17 miles south of Naples on U.S. 41 East. Hours: 8 a.m. to sunset. Google it for more information.