Southgate tube station.
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/dsf/">Darren Foreman</a>
CC BY 2.0
<a rel="nofollow" class="external free" href="https://www.flickr.com/photos/dsf/25182807216">https://www.flickr.com/photos/dsf/25182807216</a>