Prince Eugene as a new Apollo and leader of the Muses - Marble Hall. The only "real things" are the two window frames on the left and the four lamps. Any thing else is illusion on an almost flat ceiling. Upper right "over-exposition" creates the illusion of light entering the top-right window. Fresco in <a href="//commons.wikimedia.org/wiki/Schloss_Belvedere" title="Schloss Belvedere">Upper Belvedere</a>, Vienna - Austria.
<ul><li>painting: <a href="https://en.wikipedia.org/wiki/Carlo_Carlone" class="extiw" title="w:Carlo Carlone">Carlo Innocenzo Carloni</a></li>
<li>photo: <a href="//commons.wikimedia.org/wiki/User:Afernand74" title="User:Afernand74">Alberto Fernandez Fernandez</a></li></ul>
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>