Those are some really amazing pictures. Very interesting.
I think the Italians in the medieval era used to have something along these lines, too.
There are also a bunch of fortified houses on the Scottish borderlands, called bastle houses, which were farmhouses built for defense against the Border Rievers and Tories. Here is an example:
Plus there are fortified manor houses throughout the UK, for instance, Stokesay "Castle" ("Stoke" means "dairy farm"):
Some of the early settlements here in North America were also little more than fortified homes or a small group of fortified homes, for instance, Port Royal:
Edited by edgewaters - 02-Nov-2008 at 11:25