Some artists have stopped limiting themselves to using the streets as a canvas and begun using actual canvases, which then sell in galleries for high prices. Street art has been featured in world-renowned museums and gallery shows. Banksy, the world most famous street artist, has sold individual pieces for tens of thousands of pounds, and celebrities are buying works by street artists from Brazil and Japan. Thousands of visitors came to inspect the work in a 2011 street art museum exhibit in Los Angeles while neighbors complained that because of the exhibit, more graffiti was appearing on nearby walls. Major companies pay graffiti artists to do advertisements for them. They spray-paint cars, soft drinks and shoes on walls and plaster up posters with a street-art aesthetic.