This used to be an important commercial and religious hub since the early Bronze Age. Apart from the ruins, note the unique beehive-like houses.
Wikipedia http://en.wikipedia.org/wiki/Harran#Archaeology
Address Şanlıurfa Adıyaman Yolu, Şanlıurfa Province, Turkey
Coordinates 36°51'45.741" N 39°1'47.151" E
