It isn't just somnambulant hotel guests that walk the night in Britain, a host of ghosts do too. The National Trust boasts many haunted properties and has just released its list of the top ten most-haunted houses.
Number one on the list, Blickling Hall, is home to no less than the ghost of Anne Boleyn, one of Henry VIII's wives who lost her head. She is said to appear every year on May 19, the anniversary of her death. Her headless body rides in a coach driven by a headless rider and she holds her head in her lap.
But if that isn't enough for you or you don't want to wait until May for ghost-hunting, you can try one of the other nine most-haunted properties.
Dunster Castle, Somerset A man in green walks past the shop only to disappear without a trace
Quarry Bank Mill Haunted by a gang of former workers
Newton House, Dinefwr Carmarthenshire Lady Elinor Cavendish was strangled by a suitor in the 18th century and now is seen as a young girl disappearing into a cupboard
Gibside Hall, Tyne and Wear Haunted by The Unhappy Countess
Lyme Park, Cheshire Haunted by a phantom furneral procession complete with a weeping woman all dressed in white
Lanhydrock, Cornwall Haunted by the Grey Lady and a man who was hanged by Civil War Royalists
Hughenden Manor, Buckinghamshire Benjamin Disraeli, Prime Minister during Victoria's reign, is said to stand by the stairs, smiling at visitors
Powis Castle, Welshpool A lady in black sits by the fireplace
Belton House, Lincolnshire A ghost in black haunts the Queen's Bedroom