The Florinsmarkt, on which the old Kauf- und Danzhaus stands, was the political and economic center of the city in earlier times. The old Kauf- und Danzhaus together with the Florinskirche, the Schöffenhaus and the Bürresheimer Hof form an ensemble of four historic buildings, which is one of the most beautiful groups of buildings in the city.
The old "Kauf- und Danzhaus" was built in 1419 in Gothic style and rebuilt in the 17th/18th century. In the process it received baroque elements. in 1944 the building burned down and was rebuilt in 1961/62. In the old Kauf- und Danzhaus was located until 2012 the Mittelrhein-Museum (since 2013 in the Forum Confluentes).