What can a 6-millimeter camera find inside a monument that has stood for about 4,500 years? Inside the Great Pyramid of Khufu, it found a sealed corridor above the main entrance, a narrow ...

Many of the world’s most famous landmarks contain spaces the public rarely sees. Behind their familiar exteriors are hidden chambers, underground passages, and sealed rooms created for security, ...

Egypt’s ‘Area 51’ is just three miles away from the Giza Pyramids and could have been a mysterious ‘gateway to the stars’. Some speculate the structure could just be an unfinished pyramid, but others ...