The Nokia Research Center just outed an amazing app for the Nokia N9: Nokia City Scene. This app will let you explore cities right from your N9. There are couple of U.S and European cities available, but more will be automatically added as Navteq maps more cities.
Nokia City Scene is like Google Maps street view on steroids; you can search for “McDonalds” and the app will actually show you a McDonalds in a specific area; so when you get there, you know what you are looking for. You can also tap on buildings and the app will show you the restaurants, shops, services, etc… that are available on that particular building, or if any of your friends have checked into that place. This app is definitely worth a look at! Here’s the download link: Beta Labs