While Halloween is now widely celebrated throughout the world, its origins can be traced back to the Celts of the British Isles, so it's no surprise that Ireland throws quite the party. Celebrations in Ireland include fortune-telling, bonfires, eating traditional fruitcakes, and, of course, dressing in costume. For a most epic experience, Ireland's Derry City hosts the Banks of Foyle Halloween Carnival, the biggest Halloween festival in all of Europe. From dancing and haunted houses to scary movies, parades, and family-friendly activities, Ireland knows how to celebrate All Hallows' Eve.