The Tartaria Theory

The Tartaria theory is that there was a previous civilization that had been hidden from us called yes Tartaria. It's based in modern day Mongolia and Siberia but they believe it existed for the control of the entire world which built many if not all like the great wonders of the world. The pyramids, Statue of Liberty and Grand Central Station are what many would call Tartaria architecture by which they mean anything that isn't international style at glass and concrete so quite recent.