It used to be the signpost of ghetto and grime, but now graffiti art is just as welcome in the gallery.
As the artform comes of age so too do its artists, who can now make a living from what was once a crime.
One up-and-coming street artist is now winning awards for interior design.
If you don't know his name, that's because he's kept it hidden -- for a decade this artist was a man behind a mask.
But now Andrew J Steel's coming out of the shadows and painting street art in a whole new light.
"We were anonymous as BMD for a very long time," he says. "Now I sit down and talk to people who like my work and like to stand by what I've created, rather than sort of doing it and running away."
As the artists BMD, Steel and Damian Radford-Scott were the pair behind some of this country's most iconic urban art.
But after 10 years together they've now split apart, and that division's on display for all to see.
"One of the first walls I did when I went solo was a piece about the breakup," Steel says. "I did a knife fight between two dogs, and that's kind of how things became between us where we were distant and we disagreed a lot and it was very much a dog fight."
For Steel it was cathartic -- a way to vent his thoughts. Now he hopes his art can give the same release to those who see it.
"My art practice is escapism for myself and others," he says. "I do it to escape other things that have happened to me, and I really want to use that to help other people escape as well."
That escape has led Steel on an improbable journey that sees his art now regarded as interior design -- so much so it's earning him national awards, and a place on the walls of the country's finest homes.
"A lot of people that commission me didn't used to like street art or they thought it was a guy in a hoodie and baggie jeans, but now they've sort of realised it's contemporary art," Steel says.
Street art has claimed a place in the modern urban world, where change is a constant and permanence is a myth.
"Nothing lasts forever," Steel says. "With this show it's the same, it's just a shorter time span, a shorter time scale. So come Monday, everything in here is going to be destroyed and it'd be all over."
Of course that doesn't bother this artist at all -- when the world is your canvas, the work is never done.
Newshub.
