The Bäckerbrunnen was originally a confluence of water from four shallow thermal springs in the neighboring Goldgasse; in the Middle Ages, bakers fetched water for certain types of bread dough from here. Later, bathing water and water for drinking cures was filled into barrels here and distributed by carters. The new building in Grabenstraße dates back to 1906. In the 1930s, the baker's well was connected to a thermal water pipeline that supplied water to various points of use (including the well colonnade). This thermal water pipeline contained a mixture of water from Kochbrunnen, Adlerquelle and later Schützenhofquelle. The surplus water finally reached the Bäckerbrunnen fountain, which was still 50 °C warm despite its long flow path.