King's Cross Underground Station, London, England - www.aaronyeomanphotography.co.uk
One thing that has always fascinated me since they opened this part of the station few years ago are the dark boards attached to the tunnel wall which you see here in the image. I presume they were intended for adverts to be put on but I am so glad they didn't or haven't so far as you would loose the contrast between the white tiles and dark colour of the boards. Maybe they did this to keep us photographers happy? ;-) Its certainly a lot more pleasing to the eye then looking at some scruffy adverts.
Good luck to all those going to Open House London, looking forward to seeing the images you get on Monday :-). May even bump into a couple of you over the weekend.