A large network of secret tunnels under London will open to the public in 2028. The tunnels are in the Holborn area, around 30 meters underground. They were built in 1940 during World War II to protect people from air attacks. At first, they were meant to shelter 8,000 people, but other places were already used when the tunnels were finished in 1942. Later, the tunnels became a secret base for the Special Operations Executive and then a communication center during the Cold War. Local authorities recently approved a plan to turn the 8,400-square-meter area into a new attraction. It will include a military intelligence museum, a World War II memorial, and one of the world’s deepest underground bars.

The tunnels were important during global conflicts. In the 1950s, they became part of a network for international telephone lines. In 1962, during the Cuban Missile Crisis, an emergency line between the United States and the Soviet Union passed through the site. Organizers hope to teach the public about intelligence work, war history, and how to recognize false information. The Military Intelligence Museum will also move its collection to the tunnels. This includes items from secret missions. Around 4.2 million people are expected to visit each year. The project will help share this important part of history with a wider audience.