Give a brief description of the pyramids at Giza
The most famous pyramids are found at Giza. They were built by three pharaohs during second half of the third millennium B.C. The largest of the three pyramids is the Great pyramid of Cheops at Giza. It comprised of 2.5 million limestone blocks weighing 2.5 tonnes. It was 146.6 metres (481 feet) tall and 230.3 metres (756 feet) square. The capstones of all the pyramids were made of solid polished granite. The great pyramid is open to the public. Its entrance is through a narrow passage on the north side, thus leading to a sloping corridor with a low ceiling where one has to bend over while climbing a ramp. The ramp leads to a passage with a high ceiling called the Grand Gallery, from where it leads to the king's burial chamber.
