The Altes Rathaus (Old Town Hall) with its colourful façade was built from 1422 in Gothic style. Work on the impressive building lasted 14 years. In 1576, the building was modified with a Renaissance-style stepped gable. The bells at the top bear the date 1617. There were also changes in the 16th and 17th centuries. The town hall was renovated in 1885/87 and the façade paintings were renewed in 1972-1975 based on 19th century originals

The facade, decorated with paintings, a covered staircase leading upstairs, jagged shapes and a beautiful Renaissance door - all this makes it one of the mosty beautiful buildings in South Germany.

The rooms on the upper floors of the Altes Rathaus are still regularly used for meetings of the city council and committees as well as for receptions. The Reichsstädtische Bibliothek (Imperial City Library) and municipal archive are located on the ground floor.