Antoni Gaudí (1852-1926) created unique works in Barcelona — 7 of them are UNESCO. 2-day plan. SAGRADA FAMILIA Under construction since 1882 (completion 2026!). Book online 2 weeks ahead. Tower access included. Most beautiful: Nativity facade, newest: Passion. PARK GÜELL Mosaic serpent bench, dragon fountain, wooden colonnade. Only Monumental zone requires ticket (10 €). Best in the morning. CASA BATLLÓ Dragon-facade on Passeig de Gracia. AR audio-guide included. Knight-helmet chimneys on roof. CASA MILÀ (LA PEDRERA) 200 m away. Most famous Barcelona roof with wavy chimneys. Evening light shows in summer. EXTRAS Palau Güell (Las Ramblas), Colònia Güell (church, 30 min from Barcelona), Casa Vicens (Gaudí's first work). COMBO TICKET Buy "Articket" if you plan 3+ museums — saves 30%.