“Hidden London” refers to the lesser-known places, stories, and historical layers of London that many people pass by without noticing. Beneath the busy streets are forgotten spaces such as abandoned stations of the London Underground, secret tunnels, wartime shelters, and old river passages. These hidden sites reveal how the city has changed over centuries, from medieval streets to Victorian infrastructure and World War II defenses. Many of these places are rarely open to the public, but organizations like the London Transport Museum sometimes run special tours that allow visitors to explore closed stations and underground areas. Exploring Hidden London helps people discover the city’s deeper history and see a different side of one of the world’s most famous capitals.