The area around King's Cross London Underground has always been rich in history. I remember the days when you never really hung around the Tube station at night as it was the haunt of ladies from the oldest trade in the world! Now with the brand spanking new concourse & station the area's much brighter & open, yet the old history still lurks around the corner. I was intrigued to hear about The Guardian's new audio app & guide - Streetstories - which helps you explore the area.If you're in King's Cross, your smartphone knows exactly where you are, and plays audio relevant to your location. You can also listen if you're not near King's Cross. The app , can be downloaded via 3G, features ten stories, althought there is also a much larger version of the app, Streetstories Extra, available on iPhone which has over 70 stories and about two hours of audio material, downloadable via Wi-Fi. I'm going to try the Android version when I'm next around King's Cross (I've still haven't seen the new station yet!)The video shows some of the areas & stories the app features. There's stories about 7/7 bombing, all of the architecture of around St Pancras station and hotels, and Stephen Fry reading Harry Potter extracts with his use of platform 9 3/4 at King's Cross Station to get to Hogwarts.Francesca Panetta, The Guardian's Special Projects Editor, said : "."As with most audio guides you don't have to play in a particular order, so can wander round as the mood takes you. Nina Lovelace, their Content Development Manager, said "."I'd personally love to see something like this for the East End as I'm now there for work and really have no idea of lots of the background & history around Bethnal Green and Whitechapel. It might also be useful for visitors to the London Olympics if they decide to explore these areas on days off from the games.