For us today it is quite natural to get on a plane and cross great distances ... but this is a chance we have only recently had! In the past, man has always cultivated the dream of flying, and even the great Leonardo da Vinci, genius of the Renaissance, tried to realize this aspiration. Observing the flight of birds, Leonardo studied the movements of the wings and designed extraordinary flying machines incredibly similar to hang gliders, helicopters and even modern airplanes ... Build models of the ornithopter and aerial screw, then read the book and discover all the secrets of flight! The flying machines of Leonardo da Vinci reproduced in two original models and explained, in all their secrets, in a book full of curiosities! Age of reading: from 8 years.