As part of the European project Partage Plus, the Royal Institute for Cultural Heritage (IRPA) hosted a conference dedicated to the study of Art Nouveau on 13 and 14 February 2014. This event was the fifteenth Art History Seminar, an initiative of IRPA’s Documentation Department. Special attention was given to the various trends and distinctive features coexisting within Art Nouveau, both in Belgium and abroad. The conference focused particularly on the diverse trends and unique characteristics of Art Nouveau in Belgium and internationally. Freed from the constraints of historicism, artists and craftsmen drew inspiration from an extraordinarily wide range of sources. They revisited local cultures, reviving centuries-old craft techniques (wrought iron, hammering, sgraffito, ceramics, stained glass, etc.) and regional materials. The creation of this innovative visual vocabulary was further enriched by the assimilation of organic forms inspired by nature, archetypes of industrial civilization, and Japonisme. The seminar provided a valuable opportunity to showcase the variety of examples from our cultural heritage and to exchange perspectives on the subject.