London Underground is renowned for its poster archive and the Tube has become 'London's longest art gallery'. Historically these eye-catching posters enticed prospective travellers indirectly by focusing on the destination rather than the mode of travel.As well as a map of London's Underground, Tube facts and trivia, the London Underground Poster Diary 2017 features posters by famous artists and designers. It is a week to view and includes a ribbon marker and an internal storage pocket.