Near Sanliurfa archaeologists are " uncovering Göbekli Tepe (pronounced Guh-behk-LEE TEH-peh). The site is vaguely reminiscent of Stonehenge, except that Göbekli Tepe was built much earlier and is made not from roughly hewn blocks but from cleanly carved limestone pillars splashed with bas-reliefs of animals—a cavalcade of gazelles, snakes, foxes, scorpions, and ferocious wild boars.
The assemblage was built some 11,600 years ago, seven millennia before the Great Pyramid of Giza. It contains the oldest known temple. Indeed, Göbekli Tepe is the oldest known example of monumental architecture—the first structure human beings put together that was bigger and more complicated than a hut. When these pillars were erected, so far as we know, nothing of comparable scale existed in the world."----Charles C Mann.
http://ngm.nationalgeographic.com/2011/06/gobekli-tepe/mann-textI've just noticed that this particular topic is from 2006. Anyway I'll post it here. The web page above has slides and film of the model of the structures being made.
Brian