Devil's Millhopper State Geological Site

As the name indicates, this is not your average park and it's a vaguely surreal experience. The site centers on a 120ft-deep, 500ft-wide funnel-shaped rainforest which you enter by descending a 232-step wooden staircase. Water trickles down the slopes from the surrounding springs; some of it flows into a natural drain and ultimately to the Gulf of Mexico. The park is about 20 minutes northwest of downtown by car.