Lousberg

At 264 meters, the Lousberg (historically sometimes also spelled Louisberg, Luisberg or Loysberg) is a prominent elevation on the northern edge of the historic center of Aachen, which was laid out as a forest and mountain park at the beginning of the 19th century according to plans by . The origin of the name is not entirely clear. It could come from lousen ("to look"), since the mountain offers an excellent panoramic view, or it could be traced back to Louis the Pious, the son of Charlemagne. Another explanation has to do with the Aachen dialect term lous, which means "clever".

== Geology, formation == Geologically, the Lousberg is one of Aachen's three inlier mountains, along with the and the , and one of the southernmost foothills of the Aachen-Limburg Cretaceous. It was formed during the Upper Cretaceous, when the region around Aachen was affected by a Europe-wide marine transgression, during which initially sandy and later predominantly calcareous sediments were deposited (Aachen Formation). The morphological elevation of the Lousberg is related to the tectonic movements that led to the formation of the Lower Rhine Bight.