Travel guide producer DK Eyewitness Travel just released a book on the "Top 10 Cancun & the Yucatan." In the book, DK describes the top 10 Mayan Ruins for those looking to inject some history into their Mexican vacation. 1. Chichen Itza: This is the most dramatic of the Mayan cities. The pyramid here has become a symbol of Yucatan. (Fotolia)