Peruvian polygonal masonry: how, who, when and what for

The book suggests several methods that allow creating the most complicated for implementation type of a polygonal masonry existing in Peru. This masonry type consists of large stone blocks weighing from several hundred kilograms to several tons fitted almost without a gap between complicated curved surfaces over a large area. The methods under consideration are based on the use of a reduced clay model, 3D-pantograph, topography translator and replicas. The Fortress Sacsayhuaman is an example of early star fortresses that has survived to our time. The polygonal structures in Peru, the polygonal Face Towers and polygonal bas-reliefs in Cambodia, the symmetrical and geometrically similar statues of pharaohs in Egypt are based on the similar construction technologies, working methods, tools and technical contrivances. All these monuments were created by people belonging to the same European guild of architects, sculptors, builders and could not have appeared earlier than the 17th century.