The history of the pumpkin as a Halloween emblem dates back to prehistoric Celtic customs. Samhain was a holiday observed by the Celts, who lived more than 2,000 years ago in what is now Ireland, the United Kingdom, and northern France. This celebration signaled the conclusion of the harvest season and the start of winter, a season when it was thought that the lines separating the living from the dead were hazy.Today, the possibilities are boundless, with an astonishing assortment of Halloween pumpkin ideas to suit all tastes and skill levels.