The Royal Goat Hotel is linked to stories suggesting a haunting, though I don’t know of any actual haunting type occurrences that have happened there. The stories relate to David Pritchard, the first landlord of the Royal Goat Hotel and the man generally thought responsible for the Grave of Gelert.
Specific Location: Nantmor
‘In the 13th century Llywelyn, prince of North Wales, had a palace at Beddgelert. One day he went hunting without Gelert, "The Faithful Hound", who was unaccountably absent. On Llywelyn’s return the truant, stained and smeared with blood, joyfully sprang to meet his master.
Pont Aberglaslyn has a bridge with a connection to the Devil. It is very similar to other Devil and bridge related stories found throughout the British Isles. The Devil built the bridge on the understanding that he would receive the soul of the first living creature to cross over it. When the bridge was finished he went to the local inn to inform the magician Robin Ddu that it was ready.