During the day, Shark Valley is a great place to rent bikes or take a tram on the fifteen-mile looping paved road through the sawgrass wetlands of the Everglades. At night, though, a different world emerges. On a clear evening the stargazing is spectacular, and the vast openness of the savannah beckons as an alluring respite from urban congestion. After official closing hours, admission to Shark Valley is free -- and legal. Of course the parking lots and concessions are closed at night, so you'll need to bring your own bicycles and park along the entrance road at Tamiami Trail. Bring a flashlight and be prepared -- you may encounter a large gator stretched across the road, soaking up warmth from the pavement.