Example image of eyePlorer eyePlorer map for 'Archdiocese of Bremen': Catholic Church Holy Roman Empire Roman Catholic Archdiocese of Hamburg Bremen Diocese Prince-Bishop Elbe Weser Verden Imperial State Reichstag (institution) Lower Saxon Circle Lower Rhenish-Westphalian Circle Personal union Real union Bremen-Verden Willehad of Bremen Aller Charlemagne Frisia Hunte Saxons Worms, Germany Willerich List of bishops and archbishops of Cologne Suffragan bishop Ansgar Episcopal see Scandinavia Normans Rimbert Wends Adalgar Sergius Hamburg Pope Honorius III Chapter (religion) Adalbert of Hamburg Liemar Pope Gregory VII Bishopric of Lübeck Bishopric of Ratzeburg Schwerin Duchy of Saxony Archbishopric of Riga Ikšķile Riga Bavaria Frederick I, Holy Roman Emperor Henry the Lion