This book is about the great creations of human hands, erected at different times on different continents. They do not resemble each other - the pyramids of Ancient Egypt and the majestic terraces of Baalbek, the Easter Islands and the megaliths of Stonehenge . But they have one thing in common: until now, scientists can not finally decide who built all this and when. What did the ancients do ,? [ Building such a complex building............................................ like pyramids? Who really "authored" the Egyptian pyramids? Did aliens from space have a hand in the construction of Baalbek terraces? Was Stonehenge an astronomical observatory of the ancient Celts? Who taught walking stone idols of Easter Island? These and other issues are discussed in the book. Other books by H. N. Unbeknownst to Nat. House: The Curse of Things and the Cursed Places of the 100 Great Mysteries of Nature Chronicle of the Unexplained Year after year Mysterious disappearances and movements of the Wanderers of the Universe What happened to the destroyer "Eldridge" The most incredible cases Giant sea snake In the footsteps of the sea snake