Thirty metres (100 feet) below the UK capital's bustling streets, all that can be heard in the tunnels built to withstand a nuclear attack is the rumble of the London Underground's Circle Line.

LONDON: Once home to British spies and a secret long-distance telephone exchange, a little-known network of underground tunnels is located behind a blue door in a narrow London hallway.

LONDON – Tunnels built to shelter Londoners during World War II bombing by Germany are set to be transformed into the British capital's biggest new tourist attraction for years, according to the ...

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London's Blitz Shelter Tunnels to Become a New Tourist Attraction LONDON (Reuters) - Tunnels built to shelter Londoners during World War Two bombing by Germany are set to be transformed into the ...

Deep in the mountains of Switzerland lies a marvel of engineering, the Gotthard Base Tunnel. This is the longest railway and at the same time the deepest transport tunnel. Just imagine – 35.5 ...

After the completion of Step 2025, the line together with Thalwil station will be full. Another tunnel is proposed: the Zimmerberg Base Tunnel II between Thalwil and Zug, and Swiss Federal Railways ...

After centuries of speculation, archaeologists in Peru have confirmed the existence of an underground tunnel network, thought to have been built by the Incas. The groundbreaking discovery was ...

Diego Delso, CC BY-SA 4.0, via Wikimedia Commons It’s long been rumored that a network of old, underground tunnels lies beneath Cusco, Peru, the capital of the ancient Incan empire. Now ...

Using ground-penetrating radar and laser scanning, researchers from the Polytechnic University of Milan have uncovered hidden tunnels beneath the 15th-century castle that have been the subject of ...

The Sforza Castle in Milan is steeped in legends, particularly surrounding secret tunnels. These tunnels were likely used by the powerful Duke Ludovico il Moro for various purposes, such as ...