A vault of the church of the former <a href="//commons.wikimedia.org/wiki/Abbazia_di_Viboldone" title="Abbazia di Viboldone">Abbey at Viboldone</a>, (Milan, Italy). Picture by  <a href="//commons.wikimedia.org/wiki/User:G.dallorto" title="User:G.dallorto">Giovanni Dall'Orto</a>, October 31st 2009.
<a href="//commons.wikimedia.org/wiki/User:G.dallorto" title="User:G.dallorto">G.dallorto</a>
Attribution
<span class="int-own-work" lang="en">Own work</span>