Banksy artwork appears on the city maps but is soon taken down . Banksy 's last high-profile project was a month-long street art `` residency '' in New York City . A youth centre where it puts the piece down to ` ` and vandalism '' The cover art shows a couple embracing while checking their mobile phones . A mural showing secret agents , believed to be a spy , also discovered this weekend .
Banksy artwork appears on the city maps but is soon taken down . A youth centre where it puts the piece down to ` ` and vandalism '' The cover art shows a couple embracing while checking their mobile phones . A mural showing secret agents , believed to be a spy , also discovered this weekend .