Everglades National Park in the U.S. state of Florida protects the southern 25 percent of the original Everglades. It is the largest subtropical wilderness in the United States and was created to protect a fragile ecosystem. It is the third-largest national park in the lower 48 states after Death Valley and Yellowstone. It has been declared an International Biosphere Reserve, a World Heritage Site, and a Wetland of International Importance. A fifteen-mile round trip path leads from the Shark Valley Visitor Center to a two-story observation tower. Tram tours are available during the busy season
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