Antoni Gaudí (1852-1926) created unique works in Barcelona—7 of them UNESCO World Heritage Sites. 2-day itinerary. SAGRADA FAMILIA Unfinished since 1882 (completion 2026!) Book online 2 weeks in advance. Entrance to the towers is included. The most beautiful façade, the Nativity, and the newest, the Passion. PARK GÜELL Mosaic serpent bench, dragon fountain, wooden colonnade. Only the Monumental area requires a ticket (€10). Best in the morning. CASA BATLLÓ Dragon façade on Passeig de Gràcia. AR audio guide included. Roof with chimneys shaped like knights' helmets. CASA MILÀ (LA PEDRERA) 200 m away. Barcelona's most famous roof with wavy chimneys. Evening light shows in summer. ADDITIONAL Palau Güell (Las Ramblas), Colònia Güell (church, 30 minutes from Barcelona), Casa Vicens (Gaudi's first work). COMBINATION TICKET Buy an "Articket" if you plan to visit 3 or more museums—save 30%.