"Phi Ta Khon Festival" is celebrated in the Bun Pha Wet Ceremony which is normally held in Dan Sai district, Loei province. The festival is carried out to re-enact an old belief that the ghosts came out of the forest to bid farewell to Prince Vessandara, a reincarnation of Lord Buddha, and his wife on his return to the city. During the celebration, participants wear colorful masks, dress in a costume made of many pieces of fabric sewn together and hold wooden swords in a colorful parade.