On 30th July 2018, the 111th anniversary of Prehistoric Archaeology in Cologne will be celebrated. It emerged from a German Congress of Prehistorians assembled in 1907 and included an urban Museum of Prehistory that was destroyed in 1943. The remnants of the collections were integrated into the Römisch-Germanisches Museum, where they will become more visible again in the near future, when the section on prehistory will have been enlarged after the current refurbishment. The 33 papers of the festschrift recall the forgotten Museum of Prehistory and the great commitment to it by citizens of Cologne, including leading Jewish families, as well as Prehistoric Archaeology as a subject at Cologne University plus the connected laboratories. There are also contributions on important findsites with a spatial or personal relationship with Cologne, amongst them sites of the Early and Middle Stone Ages, an Early Iron Age barrow cemetery, caves, the Rhenish brown coal field, rock art, human footprints, flint mining, Linear Pottery settlements or the sanctuary of Reitia at Este, papers on landscape archaeology, experimental archaeology, and ethnological studies in Africa and the Himalayas.