The two column guided gas holders in Keighley, West Yorkshire.  The gas holder in the foreground is no longer in use (at the time of taking and upload), whilst the one to the rear of the image is still in use.  Taken on the afternoon of Saturday the 22nd of August 2009.
<a href="//commons.wikimedia.org/wiki/User:Mtaylor848" title="User:Mtaylor848">Mtaylor848</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>