Cradling Peru’s meandering Urubamba River, the verdant Sacred Valley of the Incas (official name: Urubamba Valley) sits between colonial Cusco and Incan Machu Picchu. In recent decades, the green blanketed expanse of terraced lands has become a top draw in its own right. Its sweeping vistas, fertile farmlands, small villages, and mysterious stone fortresses are gorgeous and peaceful. The hairpin-curved roads, however, are a tad unsettling.