Antoni Gaudi was a Spanish architect known for developing a unique, organic style inspired by nature. Rather than creating detailed plans, Gaudi preferred to design in 3D models, shaping details as he conceived them. Over his career, Gaudi established himself as an innovative leader of Spanish Art Nouveau, creating works like Casa Mila, Casa Batllo, and the Sagrada Familia church with curving, surreal forms that broke from traditional architecture. Though his unorthodox designs were initially controversial, Gaudi is now recognized as one of the most influential architects in history.