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:
Hohentwiel Ansicht Merian. en Castle Hohentwiel in southern germany near Lake Constance de Ansicht der Festung Hohentwiel Groe Abbildung Vermutlich realistische Darstellung der Situation Kleine Abbildung Vermutlich nach Daniel Specklin Architektura von Festungen Topographia Suevia Matthus Merian org DeMerianSueviae uselang de