Decorate your home for Halloween. From fun and whimsical to spooky and scary the perfect decor items will create your look. Halloween, All Hallows' Eve, or All Saints' Eve, is a celebration observed in a number of countries on 31 October, the eve of the Western Christian feast of All Hallows' Day and Reformation Day. The time in the liturgical year dedicated to remembering the dead, including saints, martyrs, and all the faithful departed.