Altenberg (Bergisches Land)
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Altenberg (German: [ˈaltn̩bɛʁk] ⓘ) is an Ortsteil (area) in the municipality of Odenthal in the Rheinisch-Bergischer Kreis of the State of North Rhine-Westphalia, Germany, and was formerly the seat of the Counts of Berg. Over the course of time, they created around their Residence a small dominion, which later came to be called the Bergisches Land.
At the beginning of the twelfth century the Counts donated the site of their old ancestral castle, the Burg Berge, to some Cistercian monks from Burgundy, who erected a monastery there but just a short while afterward relocated a few hundred meters further up the valley of the Dhünn. The Counts of Berg resettled at that time to Burg Castle on the Wupper.
