A residential and ritual compound about five hundred metres east of the Pyramid of the Sun, Tepantitla is famous for the best-preserved mural cycle at Teotihuacan. The Patio of the Great Goddess preserves a continuous painted programme on three walls — the giant frontal figure of the city's principal deity above, and below her a teeming scene of small figures playing in a watery paradise that some Mesoamericans identified as Tlalocan, the realm of the rain god.
The compound is fenced and gated; in practice that means a custodian will unlock the door for you for free during opening hours. Tepantitla takes thirty minutes to do properly and is one of the genuine highlights of the site. The walk from the Pyramid of the Sun to Tepantitla is unshaded — go early or late.