Gothic architecture first emerged in mid-12th ... Here, architects were often adding onto Romanesque churches that were constructed by the Normans in the early 12th century, so they had to work ...

Find provides unique insight into the early history of the church, confirming previous architectural assumptions about its construction.

It is one of the most important Romanesque monuments from the time of the Holy Roman Empire. The cathedral was the burial place of the German emperors for almost 300 years.