There's a guy in town here who does all kinds of custom ironwork, including iron (and steel) gates for driveways, private estates, etc. -- amazing stuff with patterns of hunting cats, birds of prey, etc., designed in.
Also, take a look at archives about Burning Man and see if any of the metal goodies people whomp up for that interest you. Like the fire organ:
http://www.flickr.com/photos/yoz/54156048/
I walk by this thing on my lunch hour every day. It's parked in somebody's driveway.