Tags: Religious Building.
Altenberg Abbey (Abtei Altenberg) (Latin: Vetus Mons) is a former Cistercian monastery in Altenberg now a part of Odenthal in the Bergisches Land North Rhine-Westphalia Germany.It was founded in 1133 as a daughter house of Morimond Abbey and settled initially in the old castle of the Counts of Berg Burg Berge which the counts had left for Schloss Burg but moved to the new purpose-built monastery in the valley of the Dhünn in 1153.