CENOTES - Depending on their particular formations, these natural sinkholes can be explored via wading, swimming, snorkeling and cave diving. Be prepared for a magical water world of bizarre rock formations, stalactites, stalagmites and other gorgeous natural features. CHICHEN ITZA - A trip to Chichen Itza is a must. Rent a car and shop for unique gifts like Mayan dream catchers on the way. The Yucatan’s grandest archaeological site gets hot and overrun every day, but do not let that deter you. The famous El Castillo Pyramid alone is worth the trek. COBA - In the middle of the jungle and featuring a rugged climbable pyramid to boot. A lot of structures at this marvelous site are not excavated yet, but the ones that have been are incredible.