A brand new tunnel set to connect Denmark to Germany is underway. The 11-mile long passage is costing a huge $7.9 billion but ...

Here’s a list of the top 10 longest railway tunnels in the world, showcasing the incredible feats of human innovation: The Gotthard Base Tunnel holds the title of the world’s longest railway ...

Reporting back to his YouTube channel (Exploring With Fighters), Dan found heavy steel doors guarding the entrance to the maze of tunnels, as underground ... The world's longest purpose-built ...

The entry to the underground passage will be controlled ... China is busy digging beneath the mountains to build the world's longest motorway tunnel in an ambitious three billion pound project.

The ribbon is due to be cut in 2029. The Fehmarnbelt tunnel will become the longest underwater passage in the world, surpassing the Øresund Tunnel in Sweden which is 7.8km-long.

After centuries of speculation, archaeologists in Peru have confirmed the existence of an underground tunnel network ... Cusco is a UNESCO World Heritage Site and was the historic capital of ...

To find catacombs, go to Rome, home of some of the oldest and longest burial underground tunnels in the world. "Hundreds of kilometers of catacombs run underneath the town and its outskirts," says ...