Part of a UNESCO Biosphere Reserve, this national park is a blend of tropical rain forest, coastal forest and mangrove swamps, covering an area of some 18,800 hectares (more than 46,000 acres). Within its borders you'll find 300 species of trees, 270 fern varieties and 100 kinds of orchids. Hike the lush, wooded trails to see all manner of birds, mammals and insects. If you're short on time, make the park's gorgeous waterfalls your priority. Best bets: either the Cascade aux Écrevisses (which sounds so much more appealing than the English translation, "Crayfish Falls"), or the three falls that make up the Chutes de Carbet.