Google Earth is a 3d program that lets you fly around the Earth, Mars, and the oceans. It's the most high-tech way to view maps, satellite imagery, aerial imagery, and user-generated mapped content. If you haven't tried it before, we absolutely recommend that you do. If you are interested in learning more about Google Earth, the best resource to read tutorials and news about it is the Google Earth blog, written by Frank Taylor.
360Cities is now a default part of Google Earth Photo layer so you will immediately see us as little red squares after installing Google Earth. Read the blog post. You can also turn on the "360Cities" gallery layer if you want to display only 360Cities content.
If you are a photographer, learn how to add panoramas to Google Earth.