Casa Batlló was designed by the exceptional Antoni Gaudí and it is one of his masterpieces. The facade is original, fantastical and made of stone and glass, the external walls are covered with a mosaic of fragments of coloured glass and ceramic discs, the roof is in the shape of an animal’s back. Casa Batlló is a masterpiece of shape, colour and light and has been under the protection of UNESCO since 2005.