In March 1528 the citizens of Aarau allowed the introduction of Protestantism at the urging of the Bernese. A growth in population during the 16th Century led to taller buildings and denser construction methods.
In March 1528, the citizens of Aarau permitted the introduction of Protestantism under pressure from the Bernese. A surge in population during the 16th century resulted in taller structures and denser building techniques.