Located in south Wales is Caerphilly Castle. One of many haunted castles, this one is picturesque and one of the biggest in the UK. Built during the 13th century by Gilbert de Clare or "Red Gilbert" as some called him. This massive castle is in Glamorgan and with a large moat filled with wildlife that is a popular tourist attraction today. While the castle is full of history it's got a dark side.
Among the sinister goings on includes the sighting of the Gwrach y Rhibyn, or the Spirit of Rhibyn, who looks like a terrifying hag with long black hair, leathery wings and talons. This entity is an omen of death and is similar to the Banshee. Some say that she prefers water, and this castle has a large moat. She wanders around the castle and marshes, causing mist to appear while shrieking.
Another interesting thing to mention about the region is the place of full of legends, within the county of Monmouthshire. Among those are legends of King Arthur, the Cuckoos of Risca, the giant named Jack O'Kent who built Harold's Stones, tragic love stories, Saint Nicholas a.k.a. Santa Claus, fairies and dragons. Speaking of tragic love, Caerphilly Castle has one.
The beautiful Alice of Angouleme was the wife of "Red" Gilbert de Clare. She became lonely after being abandoned by her husband so often, that she fell in love with a handsome man named Gruffudd the Fair, who was a prince of Brithdir. Their romance was in secret until one day, when he confessed to a monk about his love for Alice who was married to the neglectful Red Gilbert. The monk betrayed Gruffudd and told Red Gilbert all about it. Angry Red Gilbert sent Alice away and murdered Gruffudd. Once Alice heard about it, she either died of a broken heart or took her own life. Her spirit has appeared at the castle, always wearing green. There are many more green lady ghosts throughout the UK. These are regarded as guardians of the location they're seen. I believe that Alice has been reunited with Gruffudd and yet she's got spectral duties to fufill at the castle where she was happy with Gruffudd, and waits for his return each night.
She Wolf Night