Platform 9 3/4

This is the platform that the Hogwart's Express leaves from in the Harry Potter books. Good on King's Cross station for installing this tourist attraction! They must have had a lot of kids slamming trolleys into the wall before they put this in. I pass it twice every working day on my way in and out of King's Cross, and usually there's someone having their photo taken. Once, I saw someone discard their newspaper on the trolley (litter lout!)