egyptian pyramids, pyramid of cheops.

egyptian pyramids pyramid cheops great giza ancient egypt pharaohs khufu complex seven wonders unesco sphinx architecture burial site limestone necropolis tombs desert archeology history monuments construction hieroglyphs mummification old kingdom civilization sacred geometry mystery egyptology royal tomb khafre menkaure plateau solar boat funerary engineering art world heritage structures sands nile river historical landmark chephren culture symbolism stone blocks monument artifacts excavation