View of the inner court of the <i>Casa Mantegna</i>, built in 1473–1502 in <a href="https://en.wikipedia.org/wiki/Mantua" class="extiw" title="w:Mantua">Mantua</a> for <a href="https://en.wikipedia.org/wiki/Andrea_Mantegna" class="extiw" title="w:Andrea Mantegna">Andrea Mantegna</a> according to his own design
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/33423611@N00">Michele M. F.</a> from Milano, Italy
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/e-coli/2464827081/">Quadratura del cerchio</a>