Eugene's observations

The regular Google Earth has been free for ages and given users the ability to get views of most places from the Google satellite down to the Google car.  It gives 3D images from your street to Mars.  Now though the Pro edition has been made free.  You still need a license but that comes by email a minute or two after you sign up at

https://geoauth.google.com/gev0/free_trial.html

I recommend the flight simulator mode of travel.  You can get tutorials from http://www.google.com/intl/en_uk/earth/learn/  

This is good for both Windows and Macintosh computers although your experience will be enhanced with a modern good quality computer.