FIGURE 3.36 Central Andes subregion. (A) Cusco, Peru, was once the capital of the Incan Empire and much Incan stonework has survived since the city fell to the Spanish in 1533. Many Spanish structures were built on top of the Incan walls, such as the street shown above. These walls have withstood the earthquakes that have often hit the Andes much better than the Spanish structures built on top of them. Courtesy George Holton/Photo Researchers/Getty Images