Europe...
What an interesting find! I have an Apple computer and cannot install the 3D add-on. However, I've found that I can use the 2D Birds Eye View when using Firefox so I can enjoy the best part of it. Now I have looked around in various places and found that Europe is not very well covered. Many places in England are accessible with Birds Eye View, but outside that area there is not much to see. In the Netherlands parts of Rotterdam and The Hague can be viewed, but not Amsterdam. Other places I tried without success: Edinburgh, Dublin, Brussels, Paris, Berlin.