"Bau 15" of Carl Zeiss Jena Company - the first "Hochhaus" of Germany (1915)
<a href="//commons.wikimedia.org/w/index.php?title=User:Traigoo&amp;action=edit&amp;redlink=1" class="new" title="User:Traigoo (page does not exist)">Traigoo</a>
circa 1917 <div style="display: none;">date QS:P,+1917-00-00T00:00:00Z/9,P1480,Q5727902</div> (according to <a rel="nofollow" class="external text" href="http://www.intershop-tower.de/content.php?SID=history2">this website</a>)
<span class="int-own-work" lang="en">Own work</span>