Valladolid
The church of San Servacio, Valladolid. Photo via Wikimedia Commons.
A colonial city between Mérida and Cancun, with pastel mansions along the Calzada de los Frailes leading to the former Franciscan convent. The San Servacio church faces the main park, and cenotes like Zací sit right in town. It is the natural base for Chichen Itza and Ek Balam.