Halloween evolved from the ancient Celtic holiday of Samhain, but Halloween today is less about the fear of ghosts and ghouls and more about costumes and candy. The Celts, who used the day to mark the end of the harvest season and the beginning of winter, also believed that the change of seasons was a bridge to the world of the dead. Over the centuries, Halloween transitioned from a pagan ritual to a day of parties, costumes, jack-o-lanterns and sweet treats for kids and adults.
