If you are interested in ancient history, the museums of Mainz, ancient Mogontiacum, are not to be missed. In fact, the city boasts no less than six museums. The largest of these is the Römisch-Germanisches Zentralmuseum, (Central Museum for Roman and Germanic Art) in the palace of the former Elector-Archbishop. It consists of three departments: Pre- and Protohistory, Antiquity, and Early Middle Ages. This chronological depth is matched by a geographical width: the collections do not concentrate on Europe, but offer a lot of attention to developments in Africa and Asia. Most objects are original, but there are also a couple of replicas from other museums, which makes the museum an ideal place to explain things to students.
This museum was visited in 2001, 2005, 2008.