The naturalistic mineral archaeological museum, established in 1956, is based in the historic Palazzo della Reverenda Camera Apostolica, built in 1580.
 
It has recently undergone a refit and now contains displays illustrating the geological and environmental transformations of the Tolfa Mountain range from prehistoric times to the modern age. This is done thanks to a wide range of exhibits covering the archaeological history of the area as well as its flora and fauna and its paleontological and mineral composition. Particular emphasis has been placed on the theme of the exploitation of mineral resources.    

The archaeological section displays materials spanning from Palaeolithic times to the Renaissance, showing the most important aspects of everyday life and local industrial production, specifically the mining and use of alum. The area concentrating on naturalistic elements and minerals is the central core of the Museum. It illustrates the flora, fauna and vegetation, the animal population living in the Tolfa Mountains, the natural ecosystems and the effect human activities have on them, plus a detailed examination of the territory’s rocks, geology and minerals.

In addition, the Museum also runs a comprehensive programme of research and education, holding workshops on experimental archaeology and nature for schoolchildren of all ages.