When you were a child, you probably built dens in your gardens or had secret hiding places known only to you and your friends. As an adult, you might wish you still had your own secret hideaway to escape the troubles of the modern world! Some people do. There are secret locations and little-known places all over the world with fascinating stories behind them, but they're not secrets anymore. We know about them, and once you've watched this video, so will you!
