The Seventy Wonders of the Ancient World by Chris Scarre How were the ancient wonders of the world built? How many people did it take to build the Great Wall of China or the Sphinx at Giza? The Seventy Wonders of the Ancient World answers these and many more questions, examining antiquity's most spectacular feats of engineering and celebrating the achievements of the builders who worked without the aid of modern technology.Expanding upon the theme of the traditional Seven Wonders, The Seventy Wonders of the Ancient World incorporates marvels from around the globe, spanning the centuries from the first stone monuments of the fifth millennium BCE to the Great Temple of the Aztecs in the sixteenth century CE.