The Kaiserbrunnen (Emperor Fountain) in Konstanz (Constance) was created by sculptor Hans Baur in 1897. After a redecoration by Gernot Rumpf at the end of the 20th century, it refers to historical events related to Constance.
For example, you see a three-headed peacock wearing a tiara on each head. That refers to the fact that three popes ruled simultaneously in the 15th century. The Council of Constance (1414-1418) solved this problem. The venue of this conference, the Konzilgebäude, is still open for visits.
The name of the Kaiserbrunnen (Emperor Fountain) derives from sculptures representing emperors of four German dynasties. So you can see the busts of Henry III (Salian Dynasty), Frederick I (Hohenstaufen Dynasty), Maximilian I (House of Habsburg) and William I (House of Hohenzollern).
Sources / More info
- Link Description of the Concil of Constance on Wikipedia