Watch as we construct an extraordinary underground cave house complete with elegant decorations and a private living room. Using only primitive tools, this stunning project showcases the beauty of ...

This quirky underground town in the heart of the desert is surrounded by gems worth millions and is home to 2000 people ...

Not so much a man cave but a man aircraft hangar. Travis Kelce – the Kansas City Chiefs' tight end, Taylor Swift’s other half ...

Mariam, a 9-year-old girl, carries her brother as she stands with other children at an underground ancient cemetery in Jabal al-Zawiya in the southern countryside of Idlib, Syria, November 26, 2014.

The umbrella leaks at places called sinkholes, from which surface water makes its way underground, eroding the limestone into a honeycomb of caverns. Mammoth, the world's longest known cave system ...

Cave houses dot the landscape of Guadix, a small Granada town, in Andalusia. Discover how they got constructed, and why the ...

Carlsbad Caverns is home to some of the most spectacular examples of underground geologic features found anywhere in the United States. Located in southeastern New Mexico, the park contains more than ...