A 5 x 5 segment mosaic image of St Paul's Cathedral at night. Taken by myself with a Canon 5D and 100mm f/2.8 lens.
<a href="//commons.wikimedia.org/wiki/User:Diliff" title="User:Diliff">Diliff</a>
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>