Ghost Walk: An Audio Adventure app for iPhone and iPad

"Award-winning theatre company Poltergeist presents Ghost Walk, an immersive geo-located audio experience, starring Olivier Award-Winner Juliet Stevenson.

Plug in your headphones and embark on funny, thrilling stories around your city. Using Ghost Walk, award-winning theatre makers (""One of the UKs Best Theatre Companies"" - The Guardian) will take you on bright, playful sound walks around your city. All you need is your headphones and a mobile phone with GPS turned on, and youll be able to explore worlds full of whacky characters and thrilling adventures.

In Ghost Walk: City of London, youll meet Mary, a ghost whos been haunting the City of London for a very long time now. To try to liven things up, shes organising a party, but she needs guests. Mary wants you to track down all the ghosts in the City of London and invite them along! Meet Phillipus the Roman soldier, Ty the ghoulish punk rocker, and more hilarious characters in this adventure around the ancient City of London. Discover little-known places, and overlooked quirks in the alleys and parks of the City. "