The church was the site of the nomination of Pope Leo IX in 1048 and of the conclusion of the 1122 Concordat of Worms ending the Investiture Controversy. In 1235 the marriage of Emperor Frederick II with Isabella of England took place here.
This historic site witnessed the election of Pope Leo IX in 1048 and the signing of the 1122 Concordat of Worms, putting an end to the Investiture Controversy. A significant event took place at this location in 1235 when Emperor Frederick II married Isabella of England.