The Art Nouveau movement of architecture and design first appeared in Brussels, Belgium, in the early 1890s, and quickly spread to France and to the rest of Europe. It began as a reaction against the formal vocabulary of European academic art, eclecticism and historicism of the 19th century, and was based upon an innovative use of new materials, such as iron and glass, to open larger interior spaces and provide maximum light; curving lines such as the whiplash line; and other designs inspired by plants and other natural forms.

Victor Pierre Horta was a Belgian architect and designer, and one of the founders of the Art Nouveau movement. He was a fervent admirer of the French architectural theorist Eugène Viollet-le-Duc and his Hôtel Tassel in Brussels (1892–93), often considered the first Art Nouveau house, is based on the work of Viollet-le-Duc. The curving stylized vegetal forms that Horta used in turn influenced many others, including the French architect Hector Guimard, who used it in the first Art Nouveau apartment building he designed in Paris and in the entrances he designed for the Paris Metro. He is also considered a precursor of modern architecture for his open floor plans and his innovative use of iron, steel and glass.