"El Yunque National Forest is the only tropical rainforest in the national forest system. The park lives up to the distinction with nearly 29,000 acres of dense rainforest inhabited by geckos, mongoose, bats, and 97 bird species. Perhaps most spectacularly, there are more hiking trails than roads in El Yunque, making the park a hiker's paradise — with 24 miles of trail leading to clear mountain rivers, waterfalls, and even a high-altitude elfin forest." - Travel + Leisure Editors