The <a href="//commons.wikimedia.org/wiki/Ipogeo_a_Siracusa" class="mw-redirect" title="Ipogeo a Siracusa">Piazza Duomo square Hypogeum</a> in <a href="//commons.wikimedia.org/wiki/Siracusa" title="Siracusa">Siracusa</a>, Italy. A former underground quarry, it was turned into a shelter for the population against Allied bombings during <a href="//commons.wikimedia.org/wiki/World_War_II" title="World War II">World War II</a>. Now it is a museum. Picture by <a href="//commons.wikimedia.org/wiki/User:G.dallorto" title="User:G.dallorto">Giovanni Dall'Orto</a>, May 22 2008.
<a href="//commons.wikimedia.org/wiki/User:G.dallorto" title="User:G.dallorto">Giovanni Dall'Orto</a>.
Attribution
<span class="int-own-work">Self-photographed</span>