Cozumel is a dream destination for divers, with underwater paradises such as the Palancar and Columbia coral reefs to see. Yet while much of the activity on this small island off the Yucatán Peninsula take place in or near the water—especially the round-the-clock parties at the many beach clubs—there are plenty of worthwhile experiences to have away from the coast. The city center of San Miguel offers excellent dining, as well as activities like food tours and cooking classes to join. Farther afield, take a day trip to explore ancient Mayan ruins or beautiful Passion Island.