Art Nouveau Architecture is a style that emerged in the late 19th and early 20th centuries, characterized by its organic forms and intricate details. It often incorporates flowing lines, floral motifs, and asymmetrical shapes, reflecting a harmony between nature and design. This movement sought to break away from traditional architectural styles, embracing creativity and innovation. Prominent architects like Antoni Gaudí and Victor Horta exemplified this style through their unique buildings. Gaudí's Sagrada Família in Barcelona and Horta's Hôtel Tassel in Brussels showcase the movement's emphasis on craftsmanship and decorative arts, making them iconic examples of Art Nouveau architecture.