As the city’s most secretive and arguably most famous artist, Banksy’s work has been known to sell for millions to private collectors. But some of his original work remains visible on the streets, although some have been painted over or removed over time.
Some of Banksy’s remaining artworks around Bristol are less well-known than others, however, including 'You don’t need planning permission to build castles in the sky' in the city centre. 'It appeared on Lower Lamb Street in 2011, on a wall behind the library and Cathedral Primary School.
The words were arranged to combine with two air vents to depict a smiley face. But when the building was being revamped in 2015, the wall was broken to create a loading zone, which resulted in a roll door right in the middle of the artwork.
