The outside wall of the Ball Court at Chichen Itza.

An East view of the Nunnery at Chichen Itza.

The Complex of the Nuns, the title Nunnery is based on the Spaniards' impression of the building.

The Church of Chichen Itza next to the main Nunnery.

Stone carving at one of Mexico's ancient ruins at Chichen Itza.

Sitting on the snakehead carvings at Chichen Itza.

Pyramid of Chichen Itza is a large pre-Columbian archaeological site in Yucatan, Mexico built by the Mayan civilization.

West of the Great Pyramid of Uxmal is the Pigeon House Cluster.

A view of Caracol (The Obseratory) from the Nunnery at Chichen Itza.

Caracol (The Observatory) at Chichen Itza. Caracol (The Observatory) is suspected have been used by the Mayans to observe Venus's movements.

Tzompantli or "skull platform" associated with the Toltec culture. This structure was most likely used for the storage of heads of captives or sacrificial victims.

Sitting on the snakehead carving at Chichen Itza.