London’s Mile-Long Kingsway Exchange Tunnels to Receive $268M Renovation
In the 1940s, a mile-long series of tunnels called the Kingsway Exchange Tunnels were constructed underneath Central London. Encompassing an area of 8,000 square miles and stretching 7.6 meters in diameter, these subterranean pathways were designed to protect Londoners during the WWII Blitz.