thedeadlyhook

I've seen a couple of hawks around here, but not a falcon in the city - out in Marin, though, I think.)

Don't know about Marin, but you've got a nesting pair right there in the financial district and a close-up view of their eyrie, courtesy of a great webcam. Check it out:

http://www2.ucsc.edu/scpbrg/falconcamera.htm