transported it. There was about 100,000 men working there and it took about 20 years to build the Giza pyramid. This is the formula of setting the blocks to the Giza Pyramid : 2,400,000 stones used ÷ 20 years ÷ 365 days per year ÷ 10 work hours per day ÷ 60 minutes per hour = 0.55 stones laid per minute. Giza is the location of the Pyramid of Khufu also known as the "Great Pyramid" and the "Pyramid of Cheops". People believe that the architect of the Great Pyramid is Khufu's vizier, Hemon or Hemiunu. The Giza Necropolis has been a popular tourist destination since antiquity, and was popularised in Hellenistic times when the Great Pyramid was listed by Antipater of Sidon as one of the Seven Wonders of the Ancient World. Today it is the only one of the ancient Wonders still in existence. The pyramids are among the Seven Wonders of Ancient World, because they are geometrically perfect.