 The Mundo <unk> is to the west of the Plaza of the Seven Temples . It is the largest ceremonial complex dating from the <unk> period at <unk> . 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 <unk> 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 <unk> in the Valley of Mexico , including the use of the <unk> @-@ <unk> form . During the Early Classic period ( c . 250 – 600 ) the Mundo <unk> became one of the twin <unk> of the city , the other being the North Acropolis . From AD 250 to <unk> it may have served as the royal necropolis . The Mundo <unk> 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 . 
