Winterfest is an annual event held each winter from November through December. Winterfest Assistants support Gateway Arch Park Foundations. Kiener Plaza is located at 500 Chestnut Street St. Louis, MO 63101. A volunteer table will be set up for you to check in and receive instructions for the day. Sign Up: https://www.stlvolunteer.org/opportunity/a0C4W00000jTknZUAS/winterfest-at-kiener-plaza?layoutViewMode=tablet