The oldest core of the town hall complex is a house with a tower that belonged to the city’s reeve Jacobus who died in 1374. The piano nobile located upstairs with a lavishly decorated façade served as a session room for the city’s council. In the 1st third of the 15th century, the house became the official town hall. In 1422 the city bought the neighbouring Pawer’s House and built the sessions room for the elected representatives of the city’s inhabitants over the passage between the two houses. Later on, another the so-called Unger’s House was added to the complex. In the mid- 16th century, the Town Hall was rebuilt in the Renaissance style. The façades of all buildings were unified and an arcaded passage was built in the courtyard. Originally Gothic tower of the Town Hall was modified into present-day Baroque appearance in 1733. Subsequently, the Town Hall underwent several structural changes. In 1911–1912 a new wing was added by means of which the Town Hall was connected with the Primate’s Palace, bought by the city for the municipality purposes.

The architectural complex of the Town Hall also includes preserved original interior decorations from the Middle Ages all the way up to the 19th century that are a part of the exhibition.