Cells in <a href="https://en.wikipedia.org/wiki/Alcatraz_Federal_Penitentiary" class="extiw" title="en:Alcatraz Federal Penitentiary">Main Prison</a>, <a href="https://en.wikipedia.org/wiki/Alcatraz_Island" class="extiw" title="en:Alcatraz Island">Alcatraz</a> Island, <a href="https://en.wikipedia.org/wiki/San_Francisco" class="extiw" title="en:San Francisco">San Francisco</a>, <a href="https://en.wikipedia.org/wiki/California" class="extiw" title="en:California">California</a>, USA
<bdi><a href="https://www.wikidata.org/wiki/Q34788025" class="extiw" title="d:Q34788025"><span title="German photographer and mathematician">Dietmar Rabich</span></a>
</bdi>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>