Here is a relic from ancient empire of Tiwanaku; the
Gate of the Sun.

The Gateway construction can be represented mathematicaly by golden number; and relic itself was probably used as Sun and Venus calendar.
That is a beautiful way how civilization is connected to the nature.
Man has tried to understand nature and represent it in mathematical ways since ancient times. Looking back to the past, we found that ancient civilizations understood the beauty of nature, and that they expressed it by numbers.
Its megalithic giant’s constructions and its iconography are still at the Bolivian plateau.

Literature:
1) Art of the Andes from Chavin to Inca.
August 1997Hispanic American Historical Review 77(3):496
2) Mathematics in Tiwanaku-The gold number in the gate of the sun
January 2017
Conference: 2017 International Conference on Applied Mathematics, Modelling and Statistics Application (AMMSA 2017)