The 20th century permanent exhibition dealing with the most important artists and aspirations until the end of the Second World War is located on the recently renovated second-floor of the museum. The time period we concentrate on is 1896 to 1945, with 150 paintings, 30 statues and 200 coins.

The house was built in the 19th centuary. Its name was given after its blackened walls. The house made an important role in the political and literary life of the town. The exhibitions were opened here in 1985 - after a thorough renovation work of the building. At present a social historical permanent exhibition is held here is, but the hall sometimes offers temporal exhibitions as well, mostly in the fields of applied arts, history and literature.