Remember the "IT Crowd"?
The question of questions is "What actually the Internet really is?"
Have a look. If you want to download the full image (200M png file) please double click on the image bellow or click on the following link.
This has been generated by SNMP polling of BGP enabled device having a full Internet BGP routing table.
You can make your map of the Internet by doing the same with bgpPeeringMap.