In seven casemates, the permanent exhibition Cathedral in the Desert tells stories and anecdotes about the huge complex of the Franzensfeste Fortress and, above all, deepens the building history of the huge complex and the effects this building had on the surrounding area. In addition to the topics that deal with the planning and construction of the military facility in the first half of the 19th century, the histories of transport and gold storage in the Franzensfeste are also illustrated. The show, designed for every age group, provides exciting background information via interactive stations, which enrich the visit to the facility in an entertaining and informative way.