Fodor's Expert Review Reserva Natural Laguna Tortuguero

Puerto Rico has incredible geographic diversity for such a small island, from the rain forest of El Yunque to the dry forest of Guánica. But along the northern coast, there are all sorts of micro-habitats, including marshes and lagoons and flat stretches of grasslands that have reclaimed their territory after their use as sugarcane fields for much of the 20th century. If you're speeding past in a car, they're hard to appreciate, so stop at this nature reserve, which is crisscrossed with mountain-biking trails and has a kayak launch point. Marsh and coastal birds, as well as an occasional caiman, can be spotted here.