This one was shot in the same location as yesterday's – one of the stairwells where I work – and used much the same technique; i.e. rotating the camera during the exposure. And while a few of you came pretty close in stating that yesterday's shot was a stairwell, none of you got it quite right, mostly because what appeared to be shafts of light was actually the metal treads at the edges of the stairs.

Today's, on the other hand, is a shot of the railings at the top of the stairs. On the whole, I think I prefer this one, but I'd be interested to hear which you prefer.