Plaque at the Grand Theatre-National Opera in Warsaw, commemorating almost 350 Polish civilians murdered inside this building by SS troops during the Warsaw Uprising (8-9 August 1944).
<a href="//commons.wikimedia.org/wiki/User:Jolanta_Dyr" title="User:Jolanta Dyr">Jolanta Dyr</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>