Satellite imagery has revealed one of America's most unusual Cold War military structures—a massive pyramid hidden deep within Utah's remote desert. For years, its isolated location and striking shape ...

For more than four and a half thousand years, the Great Pyramid of Giza has stood on the edge of the Egyptian desert as a ...

We all know what Egypt's pyramids look like on the outside, but what do they look like on the inside? Narrow passageways, spacious chambers and steep galleries make up the bulk of the interior layouts ...

The Pyramid of Menkaure, one of the three famous Pyramids of Giza, has long been suspected to have another entrance that looters would never be able to find. After using several non-invasive methods ...

The pyramid tombs of Egypt’s ancient rulers are amongst the most magnificent man-made structures to have survived through antiquity, into the modern-era. They have succeeded in capturing the curiosity ...

The ancient pyramid of Hellenikon in Greece has sparked controversy among researchers and archaeologists. Is it a pyramid or is it not?

In 1785, a Spanish official named Don Diego Ruiz was looking for illegal tobacco plantations in the Papantla region of Mexico (then called New Spain), near the modern-day city of Veracruz, when he ...

See also related article by Jean-François Augereau, "Will the Great Pyramid yield up its secrets?" Manchester guardian weekly (September 14, 1986, page 12 (VF-- Art, Egypt).