It's one of the most iconic album covers of all time: John Lennon, Paul McCartney, George Harrison and Ringo Starr strolling across a zebra-striped street called Abbey Road in St John's Wood, north London.
It is an image as memorable as the moon landing - and one copied by tourists on a daily basis. (Even a few bands have paid homage, most notably Booker T & The MGs.)
