The Great Pyramid of Giza. Situated on the Giza plateau near the modern-day city of Cairo in Egypt, the great pyramid was the tallest structure ever built until the 19th century. Part of a royal burial complex it rises to a height of 146m and is made up of over two million blocks of hand-worked stone. But important questions still linger over the pyramids. How was it built? And who built them?The Seven Wonders of the Ancient World Audiobook series and Classroom Activity by Cambridge For Kids. Ai