The Wireless City Digital Tour Guide is a state of the art multimedia guide that provides a location aware interactive experience for visitors, developed by Derry City Council. You simply hire the device at the Tourist informaiton Centre and you can enjoy an audio/visual trail around the historic Walled City at your leisure. The trail usually lasts approx 1 hour and 30mins, however as this is a digital tour you can start and finish when you like and even stop for a coffee. £6 per person. Credit cards and Euro accepted.