AN ALL-NIGHTER IN MONTREAL ? GLADLY! Each year, the closing of the Montréal en Lumière festival opens up the "Nuits Blanches"ball. And what a beautiful example it gives! La Nuit blanche in Montreal offers city dwellers and tourists some 180 activities, free of charge for the most part, connected by a free shuttle service. Whether on stage or on canvas, outdoors or in bright light, in music or in story telling, in exhibitions or in dance, the city comes alive at night for fun and festivities!