This 30-square-kilometer (11-square-mile) protected habitat is located in the northeastern part of Saint Martin. Walking trails traverse the varied landscape, and there’s a wooden path through the mangroves, a winding passage over the arid forest, plus multiple lakes and a beach. Among the wildlife are tropical birds as well as iguanas and sea turtles. The surrounding waters are also protected, and dive outfitters provide snorkeling gear and instruction.