The pyramids of Giza in Egypt are the oldest of the seven wonders in the world. They were built around 2560bc in the desert near the river Nile. The great pyramid is the most famous. It was designed a tomb for king khufu. Over tow milion blocks of stone were used to build the great pyramid and it was covered with polished stone. A hundred years later, Sphynx was bulit to guard the pyramids.