The Mundo Perdido is to the west of the Plaza of the Seven Temples . It is the largest ceremonial complex dating from the Preclassic period at Tikal . The complex was organized as a large E @-@ Group consisting of a pyramid aligned with a platform to the east that supported three temples . The Mundo Perdido complex was rebuilt many times over the course of its history . By AD 250 – 300 its architectural style was influenced by the great metropolis of Teotihuacan in the Valley of Mexico , including the use of the talud @-@ tablero form . During the Early Classic period ( c . 250 – 600 ) the Mundo Perdido became one of the twin foci of the city , the other being the North Acropolis . From AD 250 to 378 it may have served as the royal necropolis . The Mundo Perdido complex was given its name by the archaeologists of the University of Pennsylvania ; it is centered upon the Lost World Pyramid and a small platform to the west of it .