Is a Ghost Floating Over the Tower of London?

An otherworldly blob floated across the Tower of London, before disappearing into the sky. Evidence of the potential supernatural phenomenon was captured by the camera of a paranormal investigator named Mark Vernon. The Tower of London is a fitting setting for a haunting. The castle was built over several centuries, and is nearly 1,000 years old. So it's seen a thing or two. It was used a prison and place of execution during its long history.