26th Century BC to Present
EgyptThe Great Pyramid of Giza is the oldest and largest of the three pyramids in the Giza pyramid complex bordering present-day Giza in Greater Cairo, Egypt. It is the oldest of the Seven Wonders of the Ancient World, and the only one to remain largely intact.
The Great Pyramid of Giza is the oldest and largest of the three pyramids in the Giza pyramid complex bordering present-day Giza in Greater Cairo, Egypt. It is the oldest of the Seven Wonders of the Ancient World, and the only one to remain largely intact.
Egyptologists believe that the pyramid was built as a tomb for the Fourth Dynasty Egyptian pharaoh Khufu over a 20-year period concluding around 2560 BC. Initially standing at 146.5 meters (481 feet), the Great Pyramid was the tallest man-made structure in the world for more than 3,800 years.t is estimated to weigh approximately 6 million tonnes, and consists of 2.3 million blocks of limestone and granite, some weighing as much as 80 tonnes.
The first precise measurements of the pyramid were made by Egyptologist Sir Flinders Petrie in 1880–82 and published as The Pyramids and Temples of Gizeh. Many of the casing stones and inner chamber blocks of the Great Pyramid fit together with extremely high precision. Based on measurements taken on the north-eastern casing stones, the mean opening of the joints is only 0.5 millimeters (0.020 in) wide.
The Great Pyramid of Giza, the largest and oldest of the three pyramids at the Giza Necropolis in Egypt and the only surviving of the original Seven Wonders of the Ancient World, was granted honorary status. The Great Pyramid of Giza was selected in New7Wonders of the World. New7Wonders of the World was a campaign started in 2000 to choose Wonders of the World from a selection of 200 existing monuments. The popularity poll via free Web-based voting and small amounts of telephone voting was led by Canadian-Swiss Bernard Weber and organized by the New7Wonders Foundation (N7W) based in Zurich, Switzerland, with winners announced on 7 July 2007 in Lisbon, at Estádio da Luz.
French engineer Jean-Pierre Houdin believes that the upper two-thirds of the pyramid was built around an inner spiral slope and an external slope to build the lower third, and he explains that cracks in two granite tablets in the king's room occurred during construction and pasted by Herman.