So many fans visit King’s Cross Station to take pictures of Platforms 9 and 10 that the station management erected a sign that says “Platform 9 3/4,” which, in the Harry Potter books, is invisible to Muggles but acts as a gateway for witches and wizards.

So many fans visit King’s Cross Station to take pictures of Platforms 9 and 10 that the station management erected a sign that says “Platform 9 3/4,” which, in the Harry Potter books, is invisible to Muggles but acts as a gateway for witches and wizards.