Cenotes (sinkholes) are deep wells with crystal clear water that can be accessed when the roof of a cave collapses. Fed by underground rivers, the cenotes were the main source of freshwater for the Mayans and therefore are considered sacred. They are unique to the Yucatán peninsula, and still to this day, the underground cave system connecting all the cenotes remains largely unexplored. Witnessing the breathtaking beauty of the large clusters of stalactites and stalagmites being mirrored in the crystal clear cool waters is a unique experience. Every cenote has its own particular beauty, and putting on a swimsuit and snorkeling in the pool is an absolutely unforgettable experience. Some tour operators also offer cave diving excursions for very experienced divers.

Unlike most aquariums, at the Interactive Aquarium of Cancún, you'll get a chance to get up close to sea creatures and even interact with some of them. Here, you can touch starfish and sea urchins, swim with dolphins, or watch them put on a show. There are over 140 species on display here and the Aquarium is open 365 days a year.

The Zorrilla Museum is located in what was once the summer home of the poet Juan Zorrilla de San Martin, in the Montevideo neighbourhood of Punta Carretas. It houses documents, belongings and furniture of the poet and has a room for temporary exhibitions in which art exhibitions, concerts, readings and other cultural activities take place.