Casa Terrades (also called "House with Thorns"), architect Josep Puig i Cadafalch. Address: Avinguda Diagonal 416-420 completed 1905 The building has six facades and occupies an entire block. Such a "hybrid of the Flemish town hall and the pseudo medieval castle of Ludwig the Mad", as the author of books about Barcelona, ​ ​ Robert Hughes, aptly put it. Maybe not the best work of Puig i Cadafalch, but certainly the most famous.→