Applications are being invited for engineering tours of Tower Bridge in London.
These will take place from 17th to 23rd January 2011. The tour will include access to the parts of the bridge not normally open to the public, including the control room, machinery rooms, and the huge bascule chambers (into which part of the bridge deck rotates when the bridge is opened to shipping).
The cost is £30 per person.
(Image courtesy of Stuart Barr on Flickr).