Larchaeologists wonder about the way in which the pyramids were built and their layout. Robert Bauval finally solves the question. The Egyptians built their pyramids in such a way that their settlements reflected the map of the sky by exactly marrying their religious convictions. He succeeded in reconstructing the axes in which the sun, the moon and the constellations rose in their time. His demonstration shows that the greatest monuments of Egypt were built as a cosmogony and a faithful reproduction of celestial movements.