Halloween Parties They decorate the house in scary decor, both outside and inside. Friends are invited over (as long as they dress up in costume), and they usually listen to spooky music, admire the children who are trick-or-treating, or watch horror movies.

Originating in the early Middle Ages with roots in an Ancient Celtic pagan festival of Samhain (summer's end), some believe that this is the time when the physical and spiritual world's are the closest. October 31st is also a celebration of the end of harvest and beginning of winter.