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The Top 50 that changed the World here ... https://www.youtube.com/watch?v=5xSac... But today, we look at 50 unexplained ruins that science, archaeology, and history are still debating. Some of these are so mysterious that they seem to defy all logic. Their age, construction method, and creator are still shrouded in mystery. Top 50 ancient ruins compilation that you need to see to believe. ]