Historically, today's territory of the Diocese of Aachen belonged to the
Diocese of Liège and the
Archdiocese of Cologne. The diocese was first created in 1802, covering the area west of the
Rhine formerly belonging to Cologne, as well as parts from the dioceses Liège,
Utrecht, Roermond and
Mainz. After the first bishop
Marc Antoine Berdolet died in 1809, Pope
Pius VII refused to commission the successor suggested by
Napoleon,
Jean Denis François Camus. After the French rulership over the area, the diocese was abolished by the bull
De salute animarum of July 16, 1821, and incorporated into the archdiocese of Cologne. On August 13, 1930 the diocese was re-established by the papal bull
Pastorale officii nostri.
Joseph Vogt was appointed as its first bishop. ==Major Churches==