Large museum with a great collection of ancient art from the Roman Rhineland: Bonn itself of course, but also Cologne, Xanten, and so on. Among the Roman objects is the famous cenotaph of Marcus Caelius. Even more famous (but not Roman) is the skeleton of the first Neanderthaler, which was discovered in a nearby valley.
There are 44 items in Bonn, Rheinisches Landesmuseum:
Bonn, Ritual crown from the cult of Isis
Bonn, Tomb of Publius Clodius of the First Legion
Bonn, Inscription mentioning I Minervia. The surname "Maximiniana" has been erased
Bonn, Tile of VI Victrix
Bonn, Helmet of a soldier of XXX Ulpia Victrix
Bonn, Jupiter Column, Jupiter
Nettersheim, Dedication to the Aufanian Mothers
Jülich, Dedication to the Rumanehabian Mothers
Jülich, Jupiter
Dormagen, Relief of Mithras and the bull
Dormagen, Face mask of a cavalry helmet
Dormagen, Face mask of a cavalry helmet, Reconstruction