Casa Batlló is one of the two great buildings designed by Antoni Gaudí on Passeig de Gràcia, the other being La Pedrera. From the outside the façade of Casa Batlló looks like it has been made from skulls and bones. The “Skulls” are in fact balconies and the “bones” are supporting pillars. Gaudí used colours and shapes found in marine life as inspiration for his creativity in this building e.g. the colours chosen for the façade are those found in natural coral. The building was designed by Gaudí for Josep Batlló, a wealthy aristocrat, as an upmarket home. Señor Batlló lived in the lower two floors with his family and the upper floors were rented out as apartments. This building is a stunningly original work and well worth the visit. If you decide to take a look around inside you will learn how much attention to detail Gaudí spent on his designs thinking about such things as varying window size depending on how high the window is from the top of the building. In this way he could ensure uniform lighting conditions in each room of the house. The audio tour that comes with the entrance ticket gives you fascinating insights into Gaudí and his influences when designing this house.