This is quiet a piece of art.
The techniques you used, are well used... The water looks realistic.
The top of the trail might need some evening out, unless it's coming out of a tunnel. Sure it may not look like London, but if you've never been to London before, you'll believe that is London. You paid attention to details, for example on "Big Ben", you showed a lot of detail.
But my favourite part of the art is the water. It just looks so realistic, even though it's black and white.
It's an amazing piece of art, keep up the good work!