The line of latitude and the line of longitude which cover the most land intersect in two locations: in the Pacific ocean and through the Great Pyramid. It sits at the geographical center of Earth's landmass.
It faces true north more accurately than any other human structure at a mind-boggling 3/60th of a degree of accuracy.
Its height is equal to the average elevation of Earth, and is roughly one billionth the average distance to the sun.
It's perimeter and height are a 1:43200 scale model of Earth, 43200 being a significant number to Earth. For example, the number of seconds in a half day.
There are not actually four sides, but eight which are concaved.. These indentations describe a circle with a radius equal to Earth's. The curvature of Earth = the curvature of each side of the structure.
Due to the design of the indented sides, it's possible to measure from one corner to an adjacent corner in three ways. These three measurements are equal to our sidereal, tropical and solar years to 3 decimal places.
It's height and angle (51°51') is derived from pi. Take a square with the perimeter of the Great Pyramid. Overlay a circle with a circumference equal to the square's perimeter (this requires knowledge of pi). Flip the radius of that circle upwards. This is its height. Because of this, the Great Pyramid's geometry is absolutely riddled with the golden ratio.
Take the base of the structure. Subtracting its inscribed circle from its superscribed circle gives you the speed of light to many decimal places. In addition to this, it sits on the line of latitude equal to the speed of light.