The so called "<a href="//commons.wikimedia.org/wiki/Cortile_della_Rocchetta_a_Milano" class="mw-redirect" title="Cortile della Rocchetta a Milano">Rocchetta</a>" is the first nucleus of the <a href="//commons.wikimedia.org/wiki/Castello_Sforzesco_a_Milano" class="mw-redirect" title="Castello Sforzesco a Milano">Castello sforzesco</a> ("Sforza's castle") in <a href="//commons.wikimedia.org/wiki/Milan" class="mw-redirect" title="Milan">Milan</a>, (Italy). Several architects worked at it.
Fabio Alessandro Locati
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>