Gaudí was a Spanish architect known for his highly unique and organic style inspired by nature. Some of his most famous works include Sagrada Família, Casa Batlló, Park Güell, and Palau Güell. He used innovative construction techniques and materials like trencadís to create distinctive facades and interiors marked by flowing shapes and vibrant colors. Gaudí dedicated his life to meticulously designing buildings that reflected his passions of architecture, nature, religion, and his home of Catalonia.