Tiwanaku and Puma Punku
Bolivia
This is one hell of a strange archeological site, that has got a lot of people scratching their heads. The monument is comprised of stone blocks that weigh hundreds of tons, and dates back to 536AD. According to the Incan inscriptions, this is supposedly where the world began, and scientifically, that’s the only answer that makes sense. No one is sure how the blocks were transported, and as they show no chisel marks, no one is sure how they were carved and shaped.
When we, with all of our tech, can’t get lines this clean and straight, and need massive machines to move our heavy loads, how did the Inca do it 1,500 years ago? I’m going to go with the Inca and say: Alien Gods.