The biggest and best preserved relief in the Mayan world.
My suggestion:
Leave early and make the most of your trip by visiting the X'canché cenote at the same time as the archaeological site (or vice versa).
Summary:
Valladolid is a little off the main zone of mass tourism on the peninsula (Riviera Maya and Cancún ), so the
archaeological site of Ek Balam is a little removed from the mass hordes of tourists who
travel to Mexico. That is, it's less visited than Chichén Itzá, which I acknowledge having snubbed. Ek Balam is less spectacular than Chichén Itzá, or even than other famous archaeological sites on the tourist round (Palenque, Tulum, Tikal, etc.). But its worth a visit for all that - although I have to say mainly for those who are mad about Mayan archaeology.