Key figures in art nouveau design were influential architects, furniture designers, graphic artists, glass and ceramics artists, and jewelry designers who played a significant role in shaping the art nouveau movement. Antoni Gaudí, known for iconic works such as Casa Batlló, Park Güell, and Sagrada Família, was a prominent architect of art nouveau. Other key figures include Victor Horta, Hector Guimard, Henry van de Velde, Émile Gallé, Alphonse Mucha, Louis Comfort Tiffany, René Lalique, and Georges Fouquet, who all contributed unique and innovative designs to the art nouveau style.