Nature has shown itself to be an infinite source of inspiration. In the 19th century, this interest intensified with the discovery of Japanese art. An enhanced sensibility to the use of fluid lines to link different designs was developed. This walking tour will focus on the continual dialogue between nature and architecture, in terms of construction materials and the layout and understanding of space, but also as regards decoration. It will end at Rue des Champs Élysées/Elyzeese Veldenstraat 72, where visitors will be able to view an exhibition of photographs illustrating the variety of the floral and plant themes in sgraffitos.