We used the colonial town of Valladolid as our base to visit not only the sights in town but two more Mayan ruins Chichen Itza and El Balam. We visited a five hundred year old structure that is a church and convent outside of town.
This church was built over a cenote which is a sink hole. The whole penninsula is honeycombed with these natural wells. The Mayans used them for rituals and drinking, and the friars who built the convent of San Bernadino used them as well. Recently they have begun searching the bottom of the well with scuba and found cannon and rifles from an uprising in the 19th century.
We enjoy the colonial towns we have visited in past and this was no exception with people and businesses residing in building centuries old.