Puma punku, Bolivia. Oldest structures on EARTH. Aprox. 14-17,000 years old & built with construction techniques unknown. Only diamonds are strong enough to cut these stones. Modern diamond tipped drills powered by computers and assisted with heavy machinery today would have great difficulty replicating the stone work.
Tiwanaku is an important Pre-Columbian archaeological site in Bolivia. Tiwanaku was the ritual and administrative capital of a major state, one of the most important precursors to the Inca Empire, flourishing for approximately five hundred years between 500 AD and 1000 AD.
The Meroe Pyramids. The Meroe Pyramids are located in the North-East of Sudan near the banks of the Nile in the area commonly known as Nubia. There are close to two hundred pyramids in a relatively small area, the ancient burial site of the Merotic Kingdom (sometimes known as the Kingdom of Kush). The Pyramids are smaller than their Egyptian cousins but equally impressive due to their number
Puma Punku in Tiahuanaco - I do not think ''aliens'' were responsible for building this site, but I think ancient man was far more advanced than we as yet understand. The technology needed here was way beyond any later civilisations.
There is one more significant thing to mention regarding the ruins of Puma Punku. Not only were these stones cut somehow, but they were finely cut. The cuts on these stones are perfectly straight. The holes cored into these stones are perfect, and all of equal depth. How is it that these ancient people were able to cut stones like this?