Chichén Itzá is a large Mayan archaeological site and one of the most notable and recognized landmarks on the Yucatán. The site itself was originally a main hub of Mayan civilization and has since been named a UNESCO World Heritage site. The focal point of the ruins is the pyramid-like El Castillo that was once used by Mayans as a temple to the god Kukulkan. 

Unfortunately, because of its fame, Chichén Itzá is crawling with tourists trying to snap a picture of one of the new Seven Wonders of the World. Nevertheless, the spectacular ruins are well worth it, even for the jaded traveler. You can avoid crowds by visiting the site in the early morning before the throngs of tour buses arrive. Recent visitors also advised bringing water and bug repellent and wearing appropriate footwear and a hat.