Altenburg (Bamberg) is a castle in Bamberg, southern Germany

The Altenburg is a castle that sits on the tallest of the seven hills of Bamberg, southern Germany, overlooking the town. It is located in Upper Franconia, a region in the state of Bavaria, and dates back to at least 1109.
The first mention of the Altenburg was in 1109, although it is likely that it was built on the spot of an earlier palisade castle.

It first served as what is known in German as a "Fliehburg". This is a castle that was not regularly inhabited but served mainly for city defense as a place where local residents could flee to in times of danger.

In 1553, during the Second Margrave War, the army of Albert Alcibiades, Margrave of Brandenburg-Kulmbach, burned the castle down. Afterward, the castle was used as a prison for a while.

In 1801, the Bamberg physician Adalbert Friedrich Marcus acquired the decaying castle and restored it from the ground up. The author E. T. A. Hoffmann, who was friends with Marcus, felt so drawn to the castle that he frequently stayed for a long time in one of the wall towers during the years 1808 to 1813.

Thanks and credit to Google Earth Studio for this aerial video.