Fans of art and beauty who have come to Barcelona for precisely these reasons shouldn't miss the chance to enter Casa Mila, otherwise known as La Pedrera. Named for its striking resemblance to a quarry, this place in fact is a UNESCO World Heritage Site for its uniqueness and heritage value, and stands as a true work of art. Created by the famed artist Antoni Gaudi, this structure is a testament to the Catalan Art Nouveau Period and is considered as one of Gaudi's most ambitious works of art. From the outside in, you'll see unique construction and unusual angles, which is signature to Gaudi's style. Casa Mila is now a cultural center, where art exhibitions, debates, and more take place within. Depending on when you'll visit, you'll play audience to performances or galleries. But one of the most common reasons to step into the Casa is to see the Espai Gaidi and La Pedrera Apartment. This is where you will truly learn about the great artists, seeing his approach to architecture and creation, and how the visual and empirical aspects of it all come together. The free audio guide, available in a number of languages, will guide you through your exploration, giving you boundless insight into the work of the great master.