Belize made the list due to Cayo's adventure excursions. ATM, Caracol, and Xunantunich are all mentioned. Ka'ana is mentioned as their choice of lodging!
"With all the hoopla over the Mayan calendar ending on December 21, 2012 (and the resulting speculation about whether that spells doom for modern civilization), it’s the perfect time to check out the lore and legends of the Mayans. There’s no better place to dig into ancient prophecies than this English-speaking country located just south of Riviera Maya, Mexico, where the jungles of Belize's Cayo District hide mysterious caves (especially Actun Tunichil Muknal, home to the crystallized skeleton of a sacrificed Mayan maiden) and the world’s second largest barrier reef is a subaquatic playground. You can climb atop ancient Mayan pyramids at Caracol, Lamanai, and Xunantunich; or, snorkel or dive with impressive ocean predators in Shark-Ray Alley off of Ambergris Caye."