Everglades National Park is located in Miami-Dade, Monroe, and Collier counties, in the state of Florida, United States. The park protects a fragile subtropical ecosystem.
As stated in the foundation document:
Everglades National Park preserves the largest subtropical wilderness in the nation, a vast natural area in the southern Everglades and Florida Bay known throughout the world for its unparalleled ecological values, natural hydrologic conditions, vibrant cultural heritage, and unique recreational and educational opportunities.