a network in a network

Is it possible to set up a site with a network, with another network “under” it?

For example:

National News Network as the main site (pulling aggregated feeds from the states news networks)

State by State News Network

Individual Web Sites for each city


Banana Sports Network

—Banana Basketball Network

Arizona Banana Basketball Network

Red Banana Conference Network

Gila Monster Banana Team web site

Blue Banana Conference Network

Cactus Banana Team web site

Rattlesnake Banana Team web site

And even if it is possible, would it make sense to set it up this way?