The <i>Porte Maillot</i> station of the Paris Metro line 1 during the installation of "platform façades" in order to automatize the line.
<a href="//commons.wikimedia.org/wiki/User:Greenski" title="User:Greenski">Greenski</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>