Photo of La Pedrera (also known as Casa Milà). It is one of the most famous buildings designed by Antoni Gaudí (1852-1926). The genius Catalonian architect, with very unusual buildings. La Pedrera is in Passeig de Gràcia, one of the most prestigious avenues of Barcelona. This building is one of jewels of the Catalonian modernism and its construction finished in 1912.
I consider that the sepia tone fits quite well to this image.