Nokia has its own Augmented Reality browser for Windows Phone smartphones of the company, called City Lens, which is essentially the same as the one released for Symbian smartphones, but has some additional features.
As you can see in the following video, the application uses the camera and displays information on restaurants, hotels, shops etc. nearby, and when the user selects something from this, see more information and reviews about this place.
Application Nokia City Lens is available in beta version and you can download it free here.