Cancun is famous for its beaches, but these aren't the area's only natural features. Some of the land surrounding Cancun is covered by dense forest, perfect for zip lining. Several outfitters offer zip line adventures; many of these adventures are half-day tours that include lunch and, in some cases, an afternoon dip in a natural pool, called a cenote. If you just can't lose sight of the water, try the zip line in Garrafon Natural Park in Isla Mujeres; it hangs suspended 100 feet above the Caribbean Sea. Most outfitters offer excursions seven days a week.