Halloween originated from Ireland. The pagan holiday "Samhain", which the "All Saints" holy day replaced, was also known as the "Day of the Dead". Many wiccans and modern pagans celebrate the "Day of the Dead". This is a "happy" holiday (even though it celebrates death). It is the day that some believed the souls of dead people come back to Earth. Pope Gregory III originally designated Halloween on November 1 as a time to honor all saints. Soon, All Saints Day incorporated some of the traditions of Samhain.