Here's a pencil sketch of The Black Friar Pub in London. What attracts me to a scene like this is the weird juxtaposition of elements. The wedge-shaped art nouveau landmark stands alone, surrounded with stark geometric postwar forms.
I used two grades of graphite pencils, an HB and a 3B. I sharpened the soft pencil into a chisel tip, which helped with the treatment of the window details..