~2560 BCE Egyptian

Great Pyramid of Giza Completed

Giza, Egypt (29.9792°N, 31.1342°E)

Detailed Account

The apex of pyramid engineering. 2.3 million blocks averaging 2.5 tonnes each, totaling 6.1 million tonnes. Base aligned to true north within 3 arc-minutes. Level to 2.1 cm across 230 meters. Encodes pi, phi, the Earth's dimensions at 1:43,200 scale, and sits at latitude 29.9792458°N — matching the speed of light (299,792,458 m/s). Contains the only known 8-sided pyramid faces, acoustic resonance chambers, and chemical-resistant granite infrastructure. The most precisely engineered structure in human history.

Geographic Context

Location Giza, Egypt
Latitude 29.979200° N
Longitude 31.134200° E
This location is at the Giza plateau — latitude 29.9792°N, matching the speed of light constant (299,792,458 m/s).