The Wedding Palace is housed in a sixteenth-century town house in the central part of Koszalin. At the beginning of the second half of the twentieth century this historic building housed the District Museum, which several years later changed to the Wedding Palace.
The tenement was built in the late Middle Ages. It was rebuilt after a fire in the 18th century. Until 1945 was a residential building. During World War II it was destroyed, and in the post-war period it was rebuilt, repaired and adapted for exposition of the former museum.
On the side walls of the tenement house there are sharp-edged blades from the 15th / 16th centuries. In addition to Gothic elements, there are also renaissance windows, such as rectangular windows. Inside, it was moved from the cathedral in 1975, a commemorative plaque commemorating the pink marble. The entire building was crowned with a hip roof.