Art Nouveau is a style of art, architecture and design that was prominent between 1890 to 1925. The style of Art Nouveau first emerged in London and Paris but was used throughout Europe and the US. The iconic style of Art Nouveau was a reaction against the late 19th century traditional neoclassical design. Art Nouveau can be characterized by floral motifs, curvilinear lines, bold linear shapes, and feminine silhouettes.. The style of Art Nouveau was greatly influenced by the natural world and many Art Nouveau designs incorporate stylized flowers, plants and animals.