It is supported by the Federal Republic of Germany and its states and is a member of the Leibniz Association of German research institutions.

He increased its size from four to 27 rooms of exhibits, had further copies and reconstructions created in the museum's own workshop and published 297 works under his own name in addition to numerous catalogues, in particular the three-volume Siedlungs- und Kulturgeschichte der Rheinlande.

[1] The elder Lindenschmit conceived of the museum as a research collection of copies, which would include all significant finds made in Germany, or even the whole of Europe, in order to facilitate comparative studies.

The museum in Mainz still has the character of a research collection, aimed more at scholars and those interested in the field than at the public in general.

In recent years, the museum has also offered "programmes for instructors" and special exhibitions devoted to current research.

Rock from the Eastern Eifel was used to build the Roman settlement of Colonia Ulpia Traiana at Xanten and was exported as far as southern Scandinavia.

[6] At the request of the State of Rhineland-Palatinate, the museum and the university have also jointly set up a centre for mineralogical archaeometry and conservation studies.