The Everglades has the distinction of being the largest tropical wilderness in the continental United States. It is almost completely covered by wetland landscapes. The waters of Everglades National Park teem with wildlife not found elsewhere in the U.S. Snakes, tropical birds and small mammals abound in these swampy conditions, but it is one of the park's toothiest animals that enjoys headliner status. Alligators can be seen both by boat and along several walking trails that run through the park. This is one of the best places in the U.S. to see these impressive prehistoric-looking creatures up close. Another attractive aspect of the Everglades is its location: Visitors can reach the entrance of the park in less than an hour if they drive from Miami (depending on traffic flow, of course).