The 4th Dynasty Pharaoh Djedefre who ruled for a short period between Khufu and Khafre did not build his Pyramid at Giza. Instead he chose a site some 5 miles North on a higher ridge. Little remains above ground of his Pyramid and it used to be thought that it had never been finished but recent work by a joint Swiss-French team in the 1990's has shown that the Pyramid probably was completed although the surrounding buildings were finished in mud brick after Djedefre's death.