The main square is named in Ostrava Masaryk - the first president of Czechoslovakia. One of the most beautiful and presentable buildings in the area is the Old Town Hall, which regularly serves as the "fathers" of the city until 1930. After that was built a new city hall and the old closed down, and then at all was given to the museum.

The building is decorated with a low turret, immediately attracts the attention, it was built before 1539, when a Hall was first mentioned in written documents. Originally, the town hall was decorated with a round tower. Between 1737 and 1780 it was reconstructed as a result of which the tower is completely rebuilt. Now she's got a square shape and was decorated for hours. Facade of the town hall rebuilt in the Baroque style. However, in such a staid building long. He expected another large-scale reconstruction, which took place in 1831-1837, respectively. Two years earlier, during a storm in the tower was hit by lightning. The townspeople thought that ancient walls will not withstand such a blow, and the tower just poured out. However, the structure broke down and wait for the next alteration. Now City Hall acquired Empire style features. In 1859 it was set up the second floor of the town hall, which was immediately occupied by various offices.

The last major reconstruction took place in 1874-1875 years when the facade of the town hall and gave him a renewed Renaissance look. It is this we see the Old Town Hall of the city of Ostrava, which now houses the museum. It has an extensive collection of various ancient artifacts found during archaeological excavations.