Art nouveau and art deco are two of the most significant movements to emerge in the last years of the 19th and the early 20th century. The appearance of furniture and applied arts of this period was dramatically altered by these new styles. 'Art nouveau' derives its name from a shop in Paris, La Maison de l'Art Nouveau, which retailed glass and furniture designed by such innovatory figures as René Lalique, Emile Gallé and Louis C Tiffany. Most art nouveau objects are characterised either by sinuous fluid forms derived from nature, or, particularly in Britain, by simple straight-lined designs with a heavy vertical emphasis. 'Art deco', named after the 1925 Paris Exposition Internationale des Arts Décoratifs et Industriels Modernes, embraces two very different approaches to the applied arts. On the one hand, designers made luxurious objects of the highest quality. On the other, modernists developed clean, simple shapes suitable for mass production. In the middle years of the 20th century, art nouveau and art deco became rather unfashionable, but today almost any type of object reflecting these styles is highly collectable, although prices for many small, mass-produced objects are still relatively low.