The Great Pyramids of Giza

The Great Pyramids of Giza are the oldest and the only wonder of the Seven Wonders of the Ancient World still in existence. Built purely out of millions of limestone blocks during Egypt’s golden age 5,000 years ago, they have stood the test of time and have triumphed as the world’s tallest man-made structure for almost 4,000 years. Over the course of decades, it took tens of thousands of highly skilled workers to accomplish the construction of these amazing structures to host the tombs of the three kings: Khafre, Khufu, and Menkaure. The skilled craftsmanship, spot-on accuracy of calculations, and incomparable endurance of these man-made structures has led many to think that there might have been help from aliens.