The mystery of a pyramid structure that was found under the sea off the coast of the Azores Islands in 2013 is still puzzling ...

Claims that researchers discovered previously unknown structures beneath the Pyramid of Khafre — the pyramid situated in the ...

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.