Sculpture, "'Double Cage Piece<i>" by <a href="https://de.wikipedia.org/wiki/Bruce_Nauman" class="extiw" title="de:Bruce Nauman">Bruce Nauman</a>, 1974, Invalidenstraße 50, <a href="https://de.wikipedia.org/wiki/Berlin-Mitte" class="extiw" title="de:Berlin-Mitte">Berlin-Mitte</a>, <a href="//commons.wikimedia.org/wiki/Germany" class="mw-redirect" title="Germany">Germany</a></i>
<a href="//commons.wikimedia.org/wiki/User:OTFW" title="User:OTFW">OTFW</a>, Berlin
CC BY-SA 3.0
<span class="int-own-work">Self-photographed</span>