Hand held with ambient light only. F4 @ 1/15th sec ISO 200.
/ Start Rant
I was stopped by the Police shortly after taking this photo as apparently, terrorists roam the streets carrying camera rucsacs, Manfroto tripods and DSLR cameras.
Of course, the couple of thousand footfall that the place attracts during the day, several hundred of which take pictures inside (banned by the building owners) using their mobile phones and being a lot less obvious about it are all above board.
/ End Rant