Jan van der Heyden – The National Gallery (London) NG992 . Title: An Architectural Fantasy. Date: c. 1665-1670. Materials: oil on oak. Dimensions: 51.8 x 64.5 cm. Nr.: NG992. Source: An Architectural Fantasy. I have changed the light and contrast of the original photo.
 NG992 . Title- An Architectural Fantasy. Date- c. 1665-1670.jpg)