The Seven Wonders of the Ancient World were by no means a comprehensive agreed-upon list of the most impressive structures of the day. Today a list like this would be determined by a TV phone-in. The masterpieces included in the original list are the traditionally accepted Wonders as first set down by Philo of Byzantium although when he drew up the list he had no way of knowing about the Great Wall of China, the Treasury at Petra or Stonehenge.

The Pyramids of Egypt 

A group of three pyramids, Khufu, Khafra, and Menkaura located at Giza, Egypt, outside modern Cairo, is often called the first wonder of the world. The largest pyramid, built by Cheops, a king of the fourth dynasty, had an original estimated height of 482 feet and the base has sides 755 feet long. It contains 2,300,000 blocks and the average weight of each block is 2.5 tons.  The Pyramids are…