Plaza de la Familia, featuring Coco, has become a longstanding Halloween Time tradition at Disney California Adventure.  The decorations and ambiance celebrate the Mexican holiday Día de los Muertos, and the vibrant colors of the area over by Goofy's Sky School are a photogenic sight.  From the skeleton characters to the beautiful draping marigolds and carnations, it's a lovely atmosphere.  And the activities and entertainment that come with this area offer a great immersion into this memorable culture.