Across the world, archaeologists keep stumbling on structures so old, so large and so technically sophisticated that they seem to have no right to exist in the eras that produced them. From submerged ...

Jetavanaramaya, a colossal fourth-century Sri Lankan stupa, was once among the world’s largest structures — a vast and ancient brick-built engineering marvel born out of religious rivalry that has ...

The ingenuity of the construction techniques used by Greek builders 2,000 years ago continues to dazzle the world. What did these ancient engineers get right? And how does looking to the past help ...

Constructed between the eleventh and fifteenth centuries, Great Zimbabwe features massive stone enclosures built entirely without mortar. Granite blocks were carefully shaped and stacked to create ...

Researchers have announced the discovery of a remarkable submerged stone wall off the coast of Brittany, France, revealing ...

Scientists believe that Earth's core is a massive ball of iron. However, a new discovery suggests that the Earth's core is surrounded by an unexpected ancient structure. A high-resolution map of the ...