Above NADA - 600 Walnut Street. An important statement in the world of street art is "Always look up". This one is high up enough to keep anyone from getting up to and has been up there for over ten years. Calling Barry Mcgee a legend is an understatement and some would say that his work is a perfect example of 90's graffiti era style. You can learn more about him here and see exactly were this mural is here.