At 146.5 m (481 ft) high, the Great Pyramid stood as the tallest structure in the world for more than 4,000 years. Today it stands at 137 m (449.5 ft) high, having lost 9.5 m (31 ft) from the top.

Every stone in Giza still has something to say if we learn how to listen.” That feeling has driven years of patient investigation into the Pyramid of Menkaure, the smallest of the three great ...