The historical roots of Halloween date back to the Celtic celebration of Samwain (pronounced “sow-in” or “sah-win”). In modern times, Ireland plays host to some of the largest Halloween parties in the world, including a massive three-day festival in Derry and a Púca Festival in the towns of Trim and Athboy (a púca, or pooka, is a mischievous, shapeshifting spirit). Follow this link to learn more.