This book, tells the story of the pyramids in Egypt. The reader will learn what and how they were built, how they looked outside and inside, how ancient Egyptian characters were deciphered, revealing some of the secrets of these majestic monuments. But to this day, there are still many mysteries associated with the pyramids. They are yet to be solved by future generations of scientists and researchers.. Almost five thousand years ago, the Egyptian Pharaoh Djoser and his brilliant architect Imhotep decided to erect a structure like never seen light - a colossal mountain of stone, built according to a strict mathematical calculation, so strong that it stood until the end of time. The construction of this world's first pyramid lasted more than two decades, and the number of workers - prisoners of war, slaves, volunteers - was estimated at tens of thousands. For the next two centuries, the Egyptian pharaohs, following the example of the first builders of the pyramid, erected tombs. During this relatively short period, great pyramids were built, which still amaze and delight crowds of tourists. "What Is What" is a series of thematic encyclopedias published from 1994 to 2001 by the publishing house "Word" and aimed at school-age children. Initially, it was translated materials of a similar German series "Was ist was", but later, as part of the series, the publishing house began to produce works by domestic authors. The abundance of illustrations, fascination, diversity and accessibility of the presentation of the material predetermined the great popularity of the series. "What is What" easy reading - serious knowledge!Other books in the series "What is What":Byzantine Wolves of Heaven. Flags Calendar. Caves of the Cat. Time. Dolls. Butterflies Sculpture. Our Body . Ancient Greeks Ancient myths Myths of Slavs Sun Apes Ancient China . Painting Orbital Stations . Underwater exploration of the Earth Planet Ancient Greece. Trees. Forest. Poisonous plants . Money from Russia . Multimedia and virtual worlds Natural Disasters Mountains Pyramids Museums Travelers . Crusaders Weather. Bees, Bumblebees, Wasps Moors Elephants Fish Birds Ships Gladiators Samurai. Pirates. Water. Bridges . Geographic Maps of the Witch Star. Internet Seven Wonders of the World Predators Nuclear Power Arctic and Antarctic. Indians Horses Dinosaurs Ancient Russia . Moscow Rus Revival . Mysterious Treasure Phenomena . Tropical Forest