In a bid to lure tourists, internationally-renowned graffiti artists were invited to create artworks in a village in The Gambia, writes the BBC’s Clare Spencer.
Provocative artist Banksy has revealed a 20m high artwork in New York to draw attention to the imprisonment of Zehra Dogan, a Kurdish painter from Turkey.
Each drop of paint is sprayed individually building the picture dot by dot.
Graffiti growth – from simple tags in the US 50 years ago – to vast colourful creations.
How Guido van Helten is using massive pieces of public art to save small towns in Australia.