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:
Piers trajan bridge. Dibuix dels pilars publicat al segle XIX Piers of Trajan's Bridge upper is Romanian side below is Serbia Taken from the book Roumania Past and Present by James Samuelson London Scanned edition by the University of Washington Dibujo de los pilares publicado en el siglo XIX pilastri superstiti in un disegno ottocentesco