You have to check this out

I knew Google Earth came out a while back, but I only just bothered to install it.

Google Earth

Like everything Google does, Google Earth is amazing. It's the type of application you don't realize you must have until you have it.

There's no point in trying to describe it, you simply have to install it right now and check it out yourself.
So make haste, put aside anything you were planning on doing today and install this.