1 Best Sight in Southern Bolivia, Bolivia

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.