Art Nouveau was an international style of art, architecture and design that originated in Europe in the late 19th century. It is characterized by organic, flowing curvilinear forms and motifs inspired by nature such as flowers, leaves, seaweed and insects. Casa Batlló in Barcelona, Spain is one of the best examples of Art Nouveau architecture, designed by Antoni Gaudi between 1905-1907. Gaudi remodeled the existing building, adding unique polychrome ceramic tiles and balconies resembling bird nests. Both the undulating exterior and flowing interior of Casa Batlló reject straight lines in favor of natural, organic shapes and surfaces that mimic the contours of the human body or ocean waves. The