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:
Ringtheater. The Ringtheater in Vienna Wien Austria Publiek Domein wegens verlopen auteursrecht Public domain copyright has expired Source org Ringtheater The twodimensional work of art depicted in this image is in the public domain worldwide due to the date of death of its author or due to its date of publication Thus this reproduction