Located on a limestone plateau in the northern area of the Yucatan peninsula, the dramatic ruins of Chichen Itza stand as a testimony to the ingenuity of the Mayan civilization. Many visitors flock to the area to view these structures, and now it is also possible to view them via this fine exhibition created by the Exploratorium Museum. With substantial funding from the McBean Family Foundation and NASA, this site explores the use of these structures as ancient observatories. Visitors will want to begin by looking through some historical essays on Chichen Itza, then proceed to learn about the expert alignments of the structures that allowed Mayans to observe different celestial bodies. The site also includes fun activities, such as Mayan math exercises and a Mayan calendar.