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:
The River Douro at Oporto from the gardens of the Exhibition Palace. Artwork woodcut engraving which was published in The Illustrated London News th November engraving cm object history credit line accession number antiqueprintsmaps html PDold Files of Portugal uploaded by Darwinius engravings Douro river in Porto Ships in