Engel-Haus, Wuppertal-Barmen, Salon im 1. OG
<a href="//commons.wikimedia.org/wiki/User:Amica_2467" title="User:Amica 2467">Amica 2467</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>