To help you out, I’ve listed some of my favorite underground London tours that take you through lost tunnels and uncover parts of London you didn’t know were there.
This network of 8000-year-old caves in the greater London area is an unexpected treat. The caves, which extend for 20 miles, were initially created as a result of flint and chalk mining.
This former plague pit has been given a Hollywood-inspired makeover and now boasts state-of-the-art special effects and live actors, to bring London’s bloody history to life.
Once known as the eighth wonder of the world, the tunnel was reopened in 2010 as part of the London Overground. You can now descend into The Grand Entrance Hall at the tunnel shaft and even discover a secret chamber.