Casa Batlló (Photo 1 of 9)
Casa Batlló by Antoni Gaudí shown here across the street, is one of the most interesting buildings on Passeig de Gràcia. You can just see behind the tree the multicoloured tiled building that stands out from the others around it.
Gaudí's work is strongly influenced by colour, natural shapes, and the lack of straight lines - which make an interesting building but also a difficult one to construct.
Address: Casa Batlló at 43 Passeig de Gràcia
Metro: Passeig de Gràcia