True pyramids are the oldest, the largest, and yet mathematically and geometrically the most advanced structures ever built on Earth. They have stood the test of time throughout the whole written history of humankind remaining their original shape and thus conveying the timeless information of their advanced architecture over the millennia. But what exactly is a true pyramid? A true pyramid is a pyramid, that follows these five characteristics: 1) It is regarded by modern Egyptologists as 4th dynasty pyramid. 2) It has a square base that is aligned very precisely with the cardinal points of compass. 3) It was built to last: Despite being built nearly 5,000 years ago it still represents almost flawless geometry. 4) No mummies, funerary scriptures, funerary art or any grave goods have ever been found inside of it. 5) It was designed and built in royal cubits (1 royal cubit = 0.5236 meters). There are only five pyramids in Egypt that meet all these five requirements. Three of them are in Giza and two of them in Dahshur. In this book will be shown how these pyramids form three different ground plans on map: one to Giza, one to Dahshur, and finally the Great Ground Plan comprising all five true pyramids of Egypt. The side lengths and the diagonals of these ground plans follow a clear mathematical pattern, which can no longer be mere accident, but a sign of systematic planning.