The capital city of Bulgaria at night with the lights on.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/10785765@N07">Vassil Tzvetanov</a> from Bulgaria
CC BY 2.0
<a rel="nofollow" class="external autonumber" href="https://www.flickr.com/photos/10785765@N07/3407852740/">[1]</a>