Hubert Robert – private collection. Title: Le pont sur le torrent. Date: mid 1780s. Materials: oil on canvas. Dimensions: 416 x 616 cm. Auctioned by Christie’s in New York, on January 27, 2007. Source: http://commons.wikimedia.org/wiki/File:Hubert_Robert_-_Le_pont_sur_le_torrent.jpg. I have changed the contrast of the original photo.