In search of adventure? This unspoiled coastal paradise in the Yucatan sprawls off the beaten path from the Mayan ruins of Tulum to the Belizean border. Brilliant butterflies, exotic tropical birds, deer, monkeys—even jaguars are said to roam the remote parts of this pristine jungle. While not far from shore you'll find mile after mile of historic ship wrecks and coral formations, much of them virtually unexplored.