This group is located to the south of the ancient city in what is known as Chichén Viejo, the group is a residential complex where the elite of Chichén Itzá lived, it is made up of living spaces and small temples. The Temple of the Phalluses, the Temple of the Snails, the Temple of the Monkeys and the Temple of the Initial Series are distinguished, from which the group takes its name, given that in this space was located a lintel with hieroglyphic writing written in the long count used by the Mayas.

Temple of the Initial Series: This construction presents a frontal stairway in its west side, which is related to a sacrificial stone, in its superior part, and with a Chac Mool, in the inferior one. On a platform that was part of a first structure, a building with two bodies was built, which is currently known as Temple of the Initial Series. This construction presents a frontal stairway on its west side, which is related to a sacrificial stone, in its upper part, and to a Chac Mool, in the lower part. In the superior area of the structure appear two atlantes that make the function of jambs of entrance to the temple and sustain a lintel that has inscribed the date July 30, 878 A.D.

Reservations are required at the Chichén Itzá Archaeological Zone ticket office. Admission will be in groups of a maximum of 50 people, accompanied by INAH personnel and a guide.

Fridays and Saturdays from 09:00 to 11:30 h and from 12:00 to 14:30 h