Hertford CastleCastle Street, Hertford, Hertfordshire SG14 1HR 01992 552 885 Lights in the building are said to turn on and off without cause, and an unexplained tapping noise was once heard in the building. In addition in the grounds, a barking dog was heard but it could not be found, and a figure resembling a monk has also here been seen carrying an apple. Link: HertsLive |