9. Chichen Itza (Mexico)
Chichen Itza, located in Mexico’s Yucatán Peninsula, was a major city of the ancient Maya civilization from approximately 600 to 1200 CE. The city’s architectural marvel, El Castillo (Temple of Kukulcán), is a step pyramid standing about 30 meters tall, featuring nine terraces and a temple at the summit. Each of the four stairways has 91 steps, totaling 365 steps when including the top platform, symbolizing the days of the solar year. During the spring and autumn equinoxes, a shadow forms on the northern staircase, creating the illusion of a serpent descending the pyramid, reflecting the Maya’s advanced understanding of astronomy. The city’s urban planning, with its grid-like layout and alignment of structures, demonstrates a sophisticated approach to city design, comparable to other ancient civilizations. (nationalgeographic.com)
