This deep pit in the pyramid’s subterranean chamber remains one of Egypt’s greatest archaeological puzzles. Could it be a secret passage or a symbolic structure?

An often overlooked pyramid in Mexico was filled with pools of a rare element in its underground chambers, leading to new theories that the structure may have had a shocking hidden purpose.

They Can't Explain its Purpose—Yet. Archaeologists Discovered a 2,200-Year-Old Pyramid. The site may have started as a guard tower to protect a road and collect taxes, but experts aren’t certain.

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.

The mystery surrounding the discovery of a 2,200-year-old pyramid in the Judean Desert near the Dead Sea comes with plenty of clues. Filled with Greek historical documents written on papyrus, bronze ...

Archaeologists discovered a 2,200-year-old pyramid structure in the Judean Desert near the Dead Sea that featured stones weighing hundreds of pounds each. Early returns from excavations have ...

The purpose of a mysterious pyramidal structure in the Judaean Desert is unknown, ... 2,200-year-old mysterious pyramid structure filled with coins and weapons found near Dead Sea.

The pyramid itself cost close to $140 million — or $800 million in today’s dollars. The missile system it controlled, known as Safeguard, cost $5.7 billion — or $32 billion today, roughly ...

When the sun plunges below the horizon in Sacramento, one of the capital region’s most recognizable landmarks flickers into sight. The Ziggurat, a 10-story pyramid-shaped building with giant ...