Renaissance artist and inventor Leonardo da Vinci drew a series of underground tunnels said to be hidden underneath Milan's ...

AN ANCIENT underground labyrinth city with its own advanced water system has been discovered after researchers stumbled across it in a garden. The sprawling network of twisting passages was found ...

Found near the Red Pyramid, this structure is like no other in Egypt and is a true experience for anyone who visits.

A remarkable discovery of underground tunnels beneath Cusco’s historic district is offering fresh insights into Inca ...

Once thought to have evolved inside the Tube network, a tunnel-dwelling mosquito might actually have emerged thousands of ...

Archaeologists have uncovered a 650,000-square-foot underground city beneath Abarkuh, Iran, used for water management, cooling, and as a refuge from the heat.

An underground tunnel network long rumored thanks to drawings by Leonardo da Vinci under Milan’s Sforza Castle are proven to ...

For centuries, whispers of hidden tunnels beneath Milan’s iconic Sforza Castle have intrigued historians and treasure hunters ...

At the bottom, the gates open to a long corridor that's been carved out of an ancient lakebed. Pipes along the walls ... In ...

What the visiting journalists weren’t told—nor were many of the soldiers living at the station, which could house up to ...

An underground labyrinth city and aqueduct were recently unearthed in the ancient town of Abarkuh in Yazd Province, Iran.

Researchers in Athens use advanced geophysical techniques to uncover hidden tunnels and drainage systems beneath the Temple ...