Guardian Platform 9 and 3/4

Guardian Platform 9 and 3/4:

Do you know London? For Harry Potter fans, King’s Cross in London is where one boards the train for Hogwarts at “Platform 9 3⁄4.”
For The Guardian’s new media mavens, it’s the setting for King’s Cross, London – Streetstories, an immersive app featuring an audio guide about the historic area which automatically activates sounds, music and stories relevant to your GPS location.

via Brand Channel