| Cancun is a planned tourist city on Mexico's Yucatan Peninsula. It is a popular vacation spot on the Caribbean coast. There is much to do in Cancun, and if you're willing to take an hour or two bus trip, there is more to explore than you could possibly fit into a single vacation. In Cancun you can swim with dolphins, scuba dive, swim, parasailing and other water activities. Below is a list of types of activities, things to do in the Cancun Mexico. Click on the images below to view activities, tours or things to do.