Set up in a room next to the sacristy of the small neo-Gothic church of the Sacred Heart of the Suffrage, the singular museum originated at the end of the 19th century at the behest of the French missionary Victor Jouet who, following a mysterious fire that broke out inside the recently completed church in the chapel of the Rosary, decided to travel around Europe in search of evidence of the afterlife of the deceased and their contact with their living relatives: In fact, among the flames of the chapel, the priest and many of the faithful believed they saw the likeness of a suffering face that was then enigmatically imprinted on the wall of the altar and can now be seen in photographic reproduction inside the museum.

The collection of mysterious traces of the afterlife put together by the religious includes only about ten finds, since the ecclesiastical authorities considered the evidence of authenticity of much of the other material they found to be insufficient. Cloths, fabrics, cassocks, papalas, breviaries, nightshirts and wooden tablets jealously guarded in showcases narrate the apparitions of the deceased in the presence of skeptical relatives, witnessed by the imprints of their hands "branded" as a future reminder and memento: These apparitions, circumstantial and each with a particular story, date back mainly to the 18th and 19th centuries and in at least one case (we are in 1879) were motivated by the concern of a Belgian woman for the dissolute life led by her son, reconverted to the faith by his mother's continuous attestations of an afterlife, to the point of founding a new religious order.