Edificio de las Monjas

Thought by archaeologists to have been a palace for Maya royalty, the so-called Edificio de las Monjas, with its myriad rooms, resembled a European convent to the conquistadors, hence their name for the building. The building's dimensions are imposing: its base is 60m long, 30m wide and 20m high. The construction is Maya rather than Toltec, although a Toltec sacrificial stone stands in front.

A smaller adjoining building to the east, known as La Iglesia (The Church), is covered almost entirely with carvings. Currently, on the far side at the back there are some passageways that are still open, leading a short way into the labyrinth inside. They are dank, slippery, smell of bat urine and it's easy to twist an ankle, but Indiana Jones wannabes will think it's totally cool.