Paderborn Cathedral and Imperial Palace

Because the Imperial Palace has excellent acoustics, concerts are often held there. Another interesting fact is that a spring can be found beneath the Imperial Palace.

The High Cathedral of St. Mary, St. Liborius, St. Kilian is the cathedral church of the Archdiocese of Paderborn and is located in the center of Paderborn city center, above the Pader springs.Source: Wikipedia

Stone Carolingian and Ottonian-Salian imperial palace of the (prince) bishopric of Paderborn, located on the north side of the Romanesque-Gothic cathedral.
Palaces were fortified places that were regularly visited by the ruler (the medieval kings did not rule from a fixed location, but traveled around the empire) and were provided with adequate structural equipment, usually in the form of representative residential buildings with a hall. In Paderborn, the palace covers roughly the area around the cathedral today. beautifulcastles.de