Edinburgh Castle: Scotland is said to be the most haunted place in Europe and one of the spots most active for paranormal sightings is Edinburgh Castle. The place features a dog cemetery and this is where ghost dogs can often be seen. There have also been reports of ghost prisoners, a headless drummer, and a piper that can be seen and heard in the castle. The piper was said to have been hired to look into the underground tunnels of the castle. . .