Sacred Geometry is a philosophical and spiritual term to explain the fundamental Laws of the Universe: Pythagorean Geometry and the relationships between geometrical laws, the Laws of the Universe, and the Laws of Nature are illuminated by the Geometry of the Sacred. Calvendo calendars are premium products - a bit more pricey than others but with added benefits: Our calendars always look beautiful on your wall because we produce them locally with premium paper and sophisticated spiral binding, ensuring easy turning of pages and flat hanging against the wall. A protective transparent plastic cover sheet provides added stability and each calendar comes in five languages. Treat yourself to a Calvendo calendar and you get something that looks better all year round.