La Pedrera - Casa Milà is celebrated by 95% of visitors as a unique Gaudí masterpiece. Its "dreamlike" wavy stone facade, innovative design, and artistic connection to nature are frequently highlighted as "mind-blowing." Over 90% consider the rooftop a major highlight, offering "stunning panoramic views" and "surreal" sculptural chimneys. The attic's exhibition on Gaudí's work and the recreated apartment also provide significant historical context. The included audio guide is praised by 40% as "informative" and enriching the experience. While tickets are often available on-site, 15% recommend online booking due to potential "crowds." Night/sunrise tours are suggested by 10% for a less rushed atmosphere. Approximately 15% note the many stairs can challenge those with mobility issues, though lifts are available. A similar percentage finds tickets "expensive," with some suggesting other Gaudí sites offer superior value. One isolated review mentioned an unpleasant staff interaction.