Take an in depth self-guided GPS audio walk through almost two thousand years of London's past by a local history teacher. The walk takes in over thirty important and sometimes overlooked sites, from a hidden Roman amphitheatre, to the original London Bridge and the Tower of London. Delve deep into London's history through its often hidden ruins and always colourful characters. The tour is ready whenever you are and the audio plays automatically at exactly the right time and place using your smartphone's GPS and the VoiceMap mobile app, which also works offline.