Halloween, or Hallowe’en, is a holiday celebrated on the night of October 31. Halloween activities include trick-or-treating, ghost tours, bonfires, costumes parties, visiting "haunted houses", carving Jack-o'-lanterns, reading scary stories and watching horroe movies. Irish immigrants carried versions of the tradition to North America in the nineteenth century. Other western countries embraced the holiday in the late twentieth century.
Halloween has its origins in the ancient Celtic festival known as Samhain, which is a celebration of the end of the harvest season in Gaelic culture, and is sometimes regarded as the "Celtic New Year".