"Here are four incredible ancient artifacts that cannot be explained. Number 1. The giant stone spheres of Bosnia discovered in 2016 are believed to be man-made and weigh an incredible 30 tons. Number 2. The Rijas bronzes, discovered in 1972 off the coast of Italy, are bronze statues believed to depict Greek warriors. However, no one can explain how they ended up in the ocean. Number 3. The inventory stela, discovered in 1858 by Auguste Mariette near the Egyptian Sphinx, states that the Sphinx was not built by Pharaoh Khufu, but was instead restored by him. Number 4. An ancient Egyptian statue that bears a striking resemblance to Michael Jackson."