Fodor's Expert Review Parque Cretacico—Cal Orck'o

Three miles outside of Sucre is, unexpectedly, one of the world's most important paleontological sites, with more than 5,500 dinosaur footprints petrified into a sandstone cliff. Over the past 68 million years, what was a well-traveled clay beach has been raised by the same tectonic movements that created the Andes into this 360-foot-high cliff. The footprints were exposed during work by a local cement factory, and although now protected within the park, are under serious threat from erosion. There are tours at noon and 1 pm that take you right up to the footprints; make sure to get there on time, and wear closed shoes (no sandals). The park itself is not just for kids, with an interesting time line and a dozen seriously impressive full-size replicas of dinosaurs. Transport (the Sauromovil) leaves from Plaza 25 de Mayo in front of the cathedral at 9:30, noon, and 2:30 every day and costs (Bs)15.