One of the cool things Google showcased at its Google I/O conference was a significantly improved Google Earth experience on mobile devices. Google has been working on a new technology to create vastly improved 3D buildings for its map products.
It's hardly the first to do it, in fact, Apple showcased a very similar feature, coming to iOS 6, a short while ago. All those great new models are for nothing if you can't find them though, which is why Google is showcasing the new "tour guides" in the Android app. An iOS version is coming soon.
Tour guides have been created for some 11,000 locations in 110 countries or regions so you'll be able to discover a lot of new places to visit, either on your tablet or in real life.