The name Cancun means "golden snakes," but you won't find any venom in this sun-kissed Yucatan paradise. The most popular destination in Mexico, Cancun beckons with stunning aqua-blue waters and white-sand beaches. While Cancun's reputation is for spring-break fun, wholesome activities for the family can be found: Ride horses on the coast, snorkel and canoe in a reserve, swim with the dolphins. If all this leaves you sun-blind, plenty of bars and fine restaurants tempt at the end of the day.