 Zaculeu was first occupied in the Early Classic Period ( AD 250 – 600 ) , and the buildings from this era show the architectural influence of the great metropolis of Teotihuacán in the Valley of Mexico . The largest constructions date from the Classic Period ( AD 250 – 900 ) . To these were added other plaza groups and buildings in the Early Postclassic ( AD 900 – 1200 ) and Late Postclassic ( AD 1200 – 1525 ) in an unbroken history . Zaculeu has been used as a ceremonial site by Mam Maya continuously to the present . 
