Like Art Deco, Art Nouveau is an ornamental style applied to such media as architecture, interior design, jewelry, and illustration. Both styles were popular in Europe and the United States, but Art Nouveau flourished earlier, between 1890 and 1910; Art Deco reached its height in the late 1920s and early ’30s. Art Nouveau emphasized nature, and objects were characterized especially by asymmetrical sinuous lines, often taking the form of flower stalks and buds, vine tendrils, insect wings, and other delicate natural objects. Art Deco, on the other hand, celebrated the modern machine and promoted geometric lines and sleek forms.