Burkhard von Weisbriach was an ecclesiastical principality whose capital was the former city of what?
Archbishopric of Salzburg The Prince-Archbishopric of Salzburg (German: "Fürsterzbistum Salzburg" ) was an ecclesiastical principality and state of the Holy Roman Empire. It comprised the secular territory ruled by the Archbishops of Salzburg, as distinguished from the much larger Catholic diocese founded in 739 by Saint Boniface in the German stem duchy of Bavaria. The capital of the archbishopric was Salzburg, the former Roman city of "Iuvavum ".
Residenz Residenz (] ) is a formal but otherwise obsolete German word for "place of living". It is in particular used to denote the building or town where a sovereign ruler resided, therefore also carrying a similar meaning as the modern expressions "seat of government" or "capital". As there were many sovereign (imperially immediate) rulers in the Holy Roman Empire, ranking from Lord (Herr) to prince elector and king, there are many towns, palaces, and castles in this territory which used to be a Residenz and are partially still so referred to today. The former residenz status of a town is frequently reflected by the architecture of its center. During the baroque period especially, many prestigious buildings were erected, sometimes even new towns were founded. Today former residenz towns mostly still serve as cultural and administrative centers.