Many ancient buildings were constructed to display harmonic proportions in stone. These include the Great Pyramid of Giza, (2500BC) which connects Phi with Pi, aligning it to the sun, moon and stars.
The Egyptian Temple of Luxor (1360 BC) was built as a gigantic musical instrument, with advanced knowledge of acoustics, to mix Earth vibrations with the singing of temple worshippers.
The Cathedral at Chartres, France, (1200 AD) is one of eighty gothic cathedrals built during the 12th century. Like Luxor, it was designed with harmonic proportions to resonate with the singing of the choir.
The design of the cathedral was marked out on the ground, using a cord with 12 equal sections separated by 13 knots, to form Pythagorean triangles. The measurements were aligned to the heavens by following the shadows of a pole erected at the center of the dome, on a specific day of the year.