The ancient Egyptians built their pyramids, tombs, temples and palaces out of stone, the most durable of all building materials. Although earthquakes, wars and the forces of nature have taken their toll, the remains of Egypt’s monumental architectural achievements are visible across the land, a tribute to the greatness of this civilization. These building projects took a high degree of architectural and engineering skill, and the organization of a large workforce consisting of highly trained craftsmen and labourers.