Museum of London iPhone app uses augmented reality to show you the past in the present

The Museum of London has launched an iPhone app which cleverly brings its extensive art and photographic collections to the streets of the capital...
The free app, called StreetMuseum, has been developed with creative agency Brothers and Sisters and makes use of geo tagging and Google Maps to guide users to various sites in London where, via the iPhone screen, various historical images of the city appear.

Saw it on Creative Review