This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Siegen Oberes Schloss Merian. de Siegen Ansicht des Oberen Schlosses aus der ersten Hlfte des Jahrhunderts Ausschnitt aus einem Kupferstich von Matthus Merian en City of Siegen Westphalia Germany view of the Upper Castle Oberes Schloss in the first half of the th century Crop from scan of an engraving by Matthus Merian Wilhelm