The Chillingham Castle, northern England, United Kingdom was originally a monastery in the late 12th century.
It attracts tourists from around the world who are eager to see the most haunted castle in Britain.
The most famous ghost of the castle is the “blue (or radiant) boy”, who according to the owners used to haunt the Pink Room in the castle.
Guests supposedly reported seeing blue flashes and a blue “halo” of light above their beds after a loud wail.
Image Credit: Photograph by David Clay.