Right line, <a href="https://en.wikipedia.org/wiki/Berlin_U-Bahn" class="extiw" title="en:Berlin U-Bahn">en:Berlin U-Bahn</a> line 1
<a href="//commons.wikimedia.org/wiki/User:Useddenim" title="User:Useddenim">Useddenim</a>
<span class="int-own-work" lang="en">Own work</span>