Ancient Egyptians built the Step Pyramid for Pharaoh Djoser in the 27th century BC, and it was the tallest structure at the time, coming in at about 62 meters (204 feet) tall.

For much of human history, stories about the construction of Egypt’s Great Pyramids were rooted in rumor rather than research. The Greek historian and geographer Herodotus, who famously counted ...

A team of engineers suggests a new theory on how Egypt’s first pyramid was built — a water elevator used to float heavy stones through the middle of the structure.