Category Events - United States, Herndon (VA) Join us for our 2nd annual Children's Chalk Creations Contest! Young Artists between the ages of 4 and 17 are invited to exercise their sidewalk chalk-y creativity outdoors in our parking lot. Prizes will be awarded in three age categories. This activity is free and open to the public. Pre-registration is requested for those who would like to enter the contest so that we ensure sufficient space.