Henry van de Velde was a Belgian architect, industrial designer, painter and art critic. He worked in Belgium, Germany and the Netherlands.
Frantz Jourdain (1847 – 1935) was an architect and author from Belgium. He is best known for La Samaritaine, an Art Nouveau department store designed in three stages between 1904 and 1928 in Paris’s 1st arrondissement. He was regarded as an Art Nouveau expert.