The westernmost temple site of the Maya culture is located at Comalcalco. Due to regional lack of limestone, the material normally used for temple construction, the city's buildings were made from fired-clay bricks held together with mortar made from oyster shells.  The use of fired brick at this site is unique in the Mayan world.

The buildings are mainly from the late Classic Period between 700-900 AD. Many bricks are skillfully ornamented with glyphs that tell their own story and some of the significant ones are on display at the Museum.
Portions of the site are currently undergoing excavation and reconstruction. The most important buildings are the northern plaza and the two pyramids Gran Acropolis and Acropolis Este.