Who's got the finest holiday light display in the Diablo Valley?
It's time to find out. If you're proud of yours, post it on this map.
As the decorations light up the map, you'll have the way marked to take a drive around Concord, Walnut Creek and Clayton and see the festive highlights.
To post a marker, click the "Add" button on the map. And if you feel your display is outstanding, post photos and videos in our Deck the House contest for a chance to win $100,000 for your local schools. Watch Patch for further details on the big contest.