Halloween is a holiday celebrated on the night of October 31. Halloween activities include trick-or-treating, ghost tours, bonfires, costume parties, visiting "haunted houses" and carving jack-o-lanterns. 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 is celebrated in several parts of the Western world, most commonly in Ireland, the United States, Canada, Puerto Rico and the United Kingdom and occasionally in parts of Australia and New Zealand.