Chichen Itza is hot all year with an average temperature of 79° F in January and December and typically in the mid-80s to low 90s during the summer. So it is surprising the Mayan’s needed a sauna. But this building is an ancient steam bath. Its small size required a person to crawl in order to get inside. They were used as part of a ritual cleansing. Other steam baths are located at Chichen Itza.