Three full days covers Barcelona; a fourth is for Montserrat

Four Gaudí sites use timed entry and sell out weeks ahead in summer

Only two Gaudí visits? Make them the Sagrada Família and Park Güell

Santa Maria del Mar in El Born: plainer and better proportioned

Montjuïc is the half-day most people cut: Miró, gardens, castle walls

The Bunkers del Carmel give the widest free view of city and sea

Montserrat needs a full day; more day trips in the full guide