3. The Everglades
When the heat hangs over the Glades like a wet blanket, you won't find a German tourist anywhere. That means you can bring your beach cruiser back to Shark Valley or catch the gator wrestling at Holiday Park. Airboat rides optional.
Everglades National Park, 40001 State Rd. 9336, Homestead (305-242-7700). $10 here.