The Egyptian pyramids are ancient pyramid-shaped masonry structures located in Egypt. There are 138 pyramids discovered in Egypt as of 2008. Most were built as tombs for the country’s Pharaohs and their consorts during the Old and Middle Kingdom periods. These are some of oldest Famous Cultural Monuments. The earliest known Egyptian pyramids are found at Saqqara, northwest of Memphis. The earliest among these is the Pyramid of Djoser (constructed 2630 BCE–2611 BCE) which was built during the third dynasty. This pyramid and its surrounding complex were designed by the architect Imhotep, and are generally considered to be the world’s oldest monumental structures constructed of dressed masonry.