Halloween, also known as All Hallows' Eve, is a yearly holiday observed around the world on October 31, the eve before the Western Christian feast of All Hallows. According to some scholars, All Hallows' Eve initially incorporated traditions from pagan harvest festivals and festivals honoring the dead, particularly the Celtic Samhain; other scholars maintain that the feast originated entirely independently of Samhain.
Typical festive Halloween activities include trick-or-treating (also known as "guising"), attending costume parties, carving jack-o'-lanterns, lighting bonfires, apple bobbing, visiting haunted attractions, playing pranks, telling scary stories, and watching horror films, as well as the religious observances of praying, fasting and attending vigils or church services.
Development of artifacts and symbols associated with Halloween formed over time. For instance, the carving of jack-o'-lanterns springs from the Samhain custom of carving turnips into lanterns as a way of remembering the souls held in purgatory. The turnip has traditionally been used in Ireland and Scotland at Halloween, but immigrants to North America used the native pumpkin, which is both much softer and much larger