One of Scotland’s most haunted sites, Edinburgh Castle is said to be home to a phantom piper, a headless drummer and a spectral dog. In 2001, the castle vaults and chambers were subjected to a rigorous 10-day scientific survey, using night-vision equipment, digital cameras, thermal imaging, and 240 carefully-screened volunteers. Nearly half of those who took part reported ghost sightings and spooky phenomena, including sudden drops in temperature and the sensation of unseen presences tugging at their clothes.