Join the young patients of Sainte-Justine as they gaze out their window at the final lighting-up ceremony of Sainte-Justine’s Tree of Lights. The event will be streamed live on thetreeoflights.org and simulcast on Rythme FM from 4 p.m. to 6 p.m. on December X. All of the lights sponsored as part of the Business Community Challenge will be added to the tree during the ceremony.