The listed building from the Wilhelminian period was erected from 1885-86 on the Schollenfeld. The Imperial Main Post Office opened on May 17, 1897. Its magnificent facade, with its elements of late gothic and Renaissance styles, sheltered the administrative offices for the post office clerks, telegraph and telephone services, and an apartment for the head of the post office.
After the post office moved out, the former hall was initially transformed into a community center in 1985. The area that used to house the parcel station became a hall for temporary exhibitions. After a long phase of remodeling, the building was finally given a new life as the Kunstmuseum on August 27, 1994.
Nostalgic blue mailbox and the writing above the windows on the second floor recall the building’s origins as the old post office. The decorative murals on the walls were also retained, as were the veneered columns of dark green, glazed mosaic work in the lobby, where the post office counters once were. Today, the spacious hall serves as an entrance with ticket counter, seating, and the museum shop. Quite a number of events and art openings take place here.