Prince Charles and Duchess of Cornwall arrive at the Great Pyramid of Giza after visit to Al Azhar Mosque in Cairo

This is an adventure.’He pointed at the pyramid explaining it was once covered in flat limestone. He said: ‘If you imagine in another time, it looked so shiny.’They also stood in front of the impassive Great Sphinx for a spectacular photo call. The prince had been very keen to show his wife around the site while on their four-day tour to the Middle East.