In the space of a decade, using cardboard stencils and spraypaint, Banksy has become a global brand. In that time he's maintained his anonymous mystique while spraying out his subversive political commentary. The aesthetic is clean, the humour spot-on, the imagery instantly readable and recognisable.

The street artist who's made it to the White House. In July 2010 his work has caught the attention of the world after a canvas was given to President Obama.

JR exhibits freely in the streets of the world, catching the attention of people who are not the museum visitors. His work mixes Art and Act, talks about commitment, freedom, identity and limitation.