The Great Pyramid of Giza is the oldest of the seven wonders of the world and the only one that still endures, in addition to being the largest of the pyramids of Egypt.
The estimated date of completion of the construction of the Great Pyramid is around 2570 BC. C., being the first and largest of the three great pyramids of the Giza Necropolis, located on the outskirts of Cairo, in Egypt. It was the tallest building on Earth for 3800 years.
It is estimated that it was built with about 2.3 million blocks of stone, whose average weight is two and a half tons per block, although there are some of them that weigh up to sixty tons. It was originally covered by about 27,000 blocks of white, polished limestone, several tons each. He maintained this aspect until the early fourteenth century, when an earthquake detached part of the limestone lining. Subsequently, the Ottoman Turks used this coating for the construction of various buildings in Cairo