As if Cuenca's famous Casas Colgadas, suspended impossibly over the cliffs below, were not eye-popping enough, they also house one of Spain's finest and most curious museums, the Museo de Arte Abstracto Español (Museum of Spanish Abstract Art)—not to be confused with the Museo Municipal de Arte Moderno, which is next to the Casas Colgadas. Projecting over the town's eastern precipice, these houses originally formed a 15th-century palace, which later served as a town hall before falling into disrepair in the 19th century. In 1927 the cantilevered balconies that had once hung over the gorge were rebuilt, and in 1966 the painter Fernando Zóbel decided to create (inside the houses) the world's first museum devoted exclusively to abstract art. The works he gathered are almost all by the remarkable generation of Spanish artists who grew up in the 1950s and were forced to live abroad during the Franco regime. The major names include Carlos Saura, Eduardo Chillida, Lucio Muñoz, Manuel Millares, Antoni Tàpies, and Zóbel himself. The museum has free smartphone audio guides, which can be downloaded from the website.