Rivers of grass, swamps filled with rare animals, and a coast-line dotted with hundreds of small islands make up the Everglades National Park, the largest sub-tropical wilderness in the United States. Located at the southern tip of Florida, the Everglades is a park for canoeists, kayakers, boaters, and water-recreation lovers of all kinds. $5 - 10. HYPERLINK "http://www.nps.gov/ever/index.htm" http://www.nps.gov/ever/index.htm.