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Leonardo da Vinci’s Forgotten Sketch Leads to the Discovery of Secret Tunnels Beneath an Italian Castle
A 500-year-old sketch by Leonardo da Vinci has led to the remarkable discovery of hidden tunnels beneath Sforza Castle in ...
Ghosts of past spies haunt London underground tunnels
Behind a blue door in a narrow London passage lies a little-known network of tunnels deep underground, once home to British ...
London's Blitz shelter tunnels to become a new tourist attraction
Tunnels built to shelter Londoners during World War Two bombing by Germany are set to be transformed into the British capital ...
Mumbai-Ahmedabad bullet train: 7 key facts about the country’s first 21-km undersea tunnel
India is making significant strides with its first undersea rail tunnel, part of the Mumbai-Ahmedabad High-Speed Rail ...