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:
Blackfriars. The original Blackfriars Bridge London under construction in RIBA riba org html Creator Giovanni Battista Piranesi PDold Blackfriars Bridge Etchings by Giovanni Battista Piranesi Construction in art Bridge construction drawings drawing Woodworking in art thcentury etchings Stone arch bridge drawings Centring