The Festival of Lights (French: Fête des lumières) in Lyon, France expresses gratitude toward Mary, mother of Jesus on December 8 of each year.^{[citation needed]} This uniquely Lyonnaise tradition dictates that every house place candles along the outsides of all the windows to produce a spectacular effect throughout the streets. With over 4 million tourists coming to Lyon for this event, the festival includes other activities based on light and usually lasts 4 days, with the peak of activity occurring on the 8th. The two main focal points of activity are typically the Basilica of Fourvière which is lit up in different colours, and the Place des Terreaux, which hosts a different light show each year.^{[citation needed]}

The origins of the festival date to 1643 when Lyon was struck by plague. The municipal councillors (échevins) promised to pay tribute to Mary if the town was spared. Ever since, a solemn procession makes its way to the Basilica of Fourvière on this day to light candles and give offerings in the name of Mary. The event thus commemorates the day Lyon was consecrated to the Virgin Mary.