Following the closure of its artisanal operations, the Eplatures sawmill site at La Chaux-de-Fonds is to be used to shelter new mixed activities : housing, administration, local shops and handcraft. In order to outline the guidelines for this urban regeneration, three teams were invited to take part in a test study : Bauart, KCAP and the Feddersen & Klostermann and Brühlmann & Loetscher group. Organized during March 2015, an exhibition gave the public an opportunity to discover the different visions of the project proposed by the stakeholders.