Short, but interesting article.
http://www.nytimes.com/2008/11/17/world/middleeast/17cairo.html?pagewanted=1
I've never really been hit with this epiphany that a civilization's remnants might be thought of as a paycheck for the distant grandchildren of those times of monument building.

Can you imagine the megalith builders discussing the economic growth potential to future historians, tour organizers, postcard printers, and fish and chip vendors as a result of their labors as they put Stonehenge together?

Me neither, but it's a funny thought.