The structural fabric of the town hall dates back to 1560 and was changed after the city had been elevated to a royal free-trade zone in 1648.
The architectural basis is thought to go back to early renaissance. The diamond-shaped ashlar of the portal points to this era, too.
The one-storey building with a broad front featuring two round oriels on the sides and a rectangular oriel in the centre has been refurbished during the baroque; a massive attic has been built on top of it during the same period. The murals discovered in 1926 probably also go back to the early renaissance period and have been adapted to fit the baroque tastes later on. In 1949 Rudolf Holzinger repainted them by closely sticking to old patterns. He also completed the missing pictures.
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