Skyscraper
I discovered the potential of the image by pure accident. I usually pick one, characteristic image out of every shooting set to put on the label for the archive CD. I have only a black and white printer to print labels, so the image is converted to B&W. When I saw the effect of conversion, I appreciated the image which I was thinking was purely boring and was ready to delete. A bit of Grayscale Mix in Lightroom fixed it!
The image was taken here. You can use Street View to find the building ;).