Caspar van Wittel – private collection. Rome, a View of the River Tiber at the Porto della Legna Looking towards Castel Sant’Angelo, with Saint Peter’s Basilica in the Distance (c. 1690)
Materials: oil on canvas. Dimensions: 52 x 102 cm. Source: http://www.sothebys.com/content/dam/stb/lots/L12/L12036/301L12036_6MTBM.jpg. P.S. I have changed the contrast of the original photo.