Art Nouveau was an artistic style that originated in Europe in the late 19th century, characterized by organic and curving forms inspired by nature. It rejected historical styles and used new materials like iron and glass alongside traditional ones. Notable Art Nouveau architects included Antoni Gaudi in Spain, Raimondo D'Aronco in Italy, Hector Guimard in France, and Victor Horta in Belgium. Gaudi's works in Barcelona such as Park Güell and Casa Mila featured curving forms and structures that resembled growing vines. Horta's works like the Tassel House featured an open floor plan and innovative use of iron. Art Nouveau spread across Europe and incorporated local styles in