This one is thanks to the map of London Spiral Staircases by Sean Batten. See https://www.google.com/maps/d/edit?mid=zGBl9m2NaoaU.kUNHdyvugwUA&usp=sharing
The location is a block of flats called George Loveless House in Bethnal Green. A little far from the tube but I went to Old Street and then a No55 bus up Hackney Road. The entrance is via an entryphone door system. Normally it would be necessary to wait for somebody to come out but on the day some workmen had the door jammed open. The building is an example of post-war 'modernism', designed by the Soviet Union born Berthold Lubetkin; the building is Y-shaped, of concrete with red brick. Built in the early 1950's as council-owned housing, the flats are now in private ownership. Words which come to mind for the staircase are crazy and amazing. Lubetkin also designed the equally amazing stairs in Bevin Court, see https://www.flickr.com/photos/edwinjones/23558521994/in/dateposted-public/


The picture was taken with a tripod with the legs on 2 steps and leaning against the rails to get the viewpoint. Triggered with a remote release while ready to catch the whole setup if it failed. I wanted to get maximup depth of field with a high aperture number and also cut noise with low ISO. The shot was taken with a Sony A700 with a Sigma 10-20mm lens at 13 mm. 3 raw images 2EV spacing processed with Photomatix Fusion Natural setting. I removed a little Noise with Topaz DeNoise. Topaz Clarity was also used. I went for mono using Topaz B&W Effects for the conversion.