A remarkable underground city, believed to have been built for security as well as water access, has been discovered beneath ...

In a new find under five historic homes in the Iranian city of Abarkuh, archaeologists discovered an underground settlement ...

Archaeologists have made an incredible discovery of what lies beneath a temple and is considered to be a "geometric miracle".

During construction work in a city of central France, archaeologists uncovered a tunnel opening and found a system of ancient Roman passageways. Photos show what remains of the underground structures.

Created more than 2400 years ago, this hidden world disappeared for 55 years, only to be rediscovered in 2005.

For most visitors, the highlight of a City of David visit is Hezekiah's Tunnel. The tunnel was ancient Jerusalem's primary source of water, according to the Bible. Today, you can traverse this ...

Kathleen Martinez of the University of Santo Domingo in the Dominican Republic and her colleagues were responsible for the ...

Beneath the streets of Rome lies a city of the dead known as the Catacombs—a labyrinth of tunnels, hundreds of miles long, lined with the neatly laid out tombs of the citizens of ancient Rome.

We asked Aicher, author of "Guide to the Aqueducts of Ancient Rome," about the ... but kept the city of Rome clean. Romans used tunnels to get to prized underground springs and bring water through ...