Antoni Gaudí was the leading architect of Catalan Modernisme, celebrated for his imaginative buildings inspired by nature, geometry, and his deep Catholic faith. Rejecting conventional design methods, he developed innovative construction techniques and often worked from three-dimensional models rather than detailed drawings. His masterpiece, the still-unfinished Sagrada Família in Barcelona, has become one of the world's most visited landmarks. Seven of Gaudí's works are designated UNESCO World Heritage Sites.