In 2013, Montpellier city council launched the “Folie Richter” competition. It sought to identify a blueprint for a beacon tower to enrich the city’s architectural heritage. The RFP stressed the desire for a bold project that had to fit into its environment and includes shops and homes. Manal Rachdi, Nicolas Laisné and Dimitri Roussel decided to call on the Japanese architect Sou Fujimoto. All three of them seek inspiration in nature even if they express it in very different ways. On the Arbre Blanc, these four visions would be mutually enriching.