The Archaeological Museum, formerly the Museum of Pre- and Early History, is housed in the Carmelite Church. A modern annexe designed by Joseph-Paul Kleihues has recently been added. The Archaeological Museum devotes itself to the investigation, documentation and presentation of archaeological findings of Frankfurt and its environs from pre-historic times, the Roman period, the Middle Ages and the modern era.
https://www.frankfurt-tourismus.de/en/Media/Attractions/Archaeological-Museum