Santa Lucia Festival of Light in Stockholm takes part every year on December 13. Santa Lucia day is celebrated in a few European Countries. Festival of Light was highlighted by a beautiful performance of children and teenagers from a local club. They performed a synchronized dance in a swimming pool.
Source: https://www.euronews.com/culture/2021/12/13/lights-dazzle-in-swimming-pool-to-celebrate-festive-santa-lucia-day-in-sweden
