This collection is housed in the old Hôtel-Dieu (hospital). The first constraint was to respect the architecture of the site, hence the standalone metal structure on three levels. The other constraints were that every object exhibited must satisfy two conditions: they have to comply with the scale (1/12th) and be made of the same material as the original. Micro-miniatures, invisible to the naked eye are also exhibited. Lent by museums and collectors, the objects are frequently renewed.