Caspar van Wittel – Cincinnati Art Museum. View of the Royal Palace at Naples (1706)
Materials: oil on canvas. Dimensions:? Nr.:? Source: www.facebook.com/photo.php?pid=63569595&l=d806154008&…. P.S. I have changed the light, contrast and colors of the original photo.
There are at least three other paintings similar to this one. One, which seems to resemble it the most, is preserved in the Palazzo Zevallos Stigliano of Naples (http://www.palazzozevallos.it/interno_galleria.asp?q_idmnu=6).