Google Earth

Google Earth –Explore, Search and Discover Want to know more about a specific location? Dive right in -- Google Earth combines satellite imagery, maps and the power of Google Search to put the world's geographic information at your fingertips.
Fly from space to your neighborhood. Type in an address and zoom right in. Search for schools, parks, restaurants, and hotels. Get driving directions. Tilt and rotate the view to see 3D terrain and buildings. Save and share your searches and favorites. Even add your own annotations. Google Earth puts a planet's worth of imagery and other geographic information right on your desktop. View exotic locales like Imphal Manipur which is surrounded by 9 hills and New Delhi capital of India as well as points of interest such as local restaurants, hospitals, schools, and more.

Some restriction has given for accessing this site those Operating System which is supported are given below:--

Minimum configuration for PC:
Operating System: Windows 2000, Windows XP CPU: Pentium 3, 500Mhz - System Memory (RAM): 128MB RAM Hard Disk: 400MB free space Network Speed: 128 Kbits/sec Graphics Card: 3D-capable with 16MB of VRAM Screen: 1024x768, "16-bit High Color" screen .

Minimum configuration for Mac:
Operating System: Mac OS X 10.3.9 CPU: G3 500Mhz System Memory (RAM): 256MB RAM Hard Disk: 400MB free space Network Speed: 128 Kbits/sec Graphics Card: 3D-capable with 16MB of VRAM Screen: 1024x768, "16-bit High Color" screen.
But here i'm suggesting to you that if you used XP then it must be quitely reasonable for you.
For accessing whole things you've to visit GoogleEarth which you'll get further information.