6. Ceremonial Center of Nabta Playa, Egypt
Go to The NEXT Page for More Pictures >>>Located in the Sahara Desert in Egypt, Nabta is a site containing the oldest known astronomically aligned stones in the world, dating one thousand years before Stonehenge in England. Although civilizations last inhabited this arid area of the Nubian Desert in the 10th-8th millennium BCE, this stone site remains next to what seems to be an ancient lake. Today the desert is totally dry, but about 130,000 to 70,000 years ago, there is evidence of the last humid period in the desert, which most likely created a lake near the site that the ancient people worshiped. While the origins of the site are not necessarily a mystery, it is interesting that Stonehenge is usually marked as the first astronomical site, when Nabta predates it by a thousand years.