The Collectionnite Gallery displays odd collectibles, from early Wunderkammers to contemporary collections, as well as studies on collecting habits and psychology. We use the term collectionnite, which in French refers to collectomania with the suffixe "-ite" specifically referring to the concept of disease. In The Tricottet Collection, its use is made less pathological with collectionnite becoming an object that sounds just like a marcassite, an ammonite or a meteorite. For our work on the curating aspects of metacollecting and on the concept of collection-object, see Mignan (2016).

The Forteana Gallery displays rare objects related to fortean phenomena, especially documents of historical significance associated with famous collectors. All relate to parapsychology (e.g., spiritualism & magic books from the E.A. Dearn library), cryptozoology (e.g., the "Kubuyuruk" archive of explorer J. Welzl) and ufology (e.g., UFO sketches in a scrapbook). This gallery is still under construction.

The Scientifica Gallery displays objects and documents relating to the study of historic engineering marvels (Antikythera Mechanism, Babbage's Engines) and to the collecting of scientific devices (e.g., calculators) and study specimens (e.g., medical samples). Fields considered are fundamental sciences, engineering and medicine. For natural sciences, please visit the dedicated Halls of Minerals, of Life and of Meteorites. Several sections are dedicated to Allan G. Bromley, his work and collection.