~450 BCE Greek

Herodotus Visits the Pyramids

Giza, Egypt (29.9792°N, 31.1342°E)

Detailed Account

Greek historian provides the first detailed account of the pyramids, claiming 100,000 workers built the Great Pyramid over 20 years. He describes now-lost features including inscriptions on the casing stones. Herodotus also records that the priests told him the pyramids encoded astronomical knowledge — a claim largely dismissed until modern measurements confirmed mathematical constants encoded in the structure.

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).