1st stop – viaducte de Vallcarca location and overall description of the neighbourhood rationalism architecture, boat houses hydraulic tiles artist Scott Riley 2nd stop – boulder wall of Park Güell Castell d’en Blai Events in Park Güell Jess Franco 3rd stop – carrer d’Arnold Schoenberg Arnold Schoenberg 12 step theory Thomas Mann triskaidekaphobia 4th stop – Mirador av. Coll del Portell Barcelona’s skyline rationalism architecture, Casa Vilaró 5th stop – plaça de John Lennon Juan Marsé Galeria H20 Cal Boter