La Notte (English: The Night) is a 1961 Italian drama film directed by Michelangelo Antonioni and starring Marcello Mastroianni, Jeanne Moreau and Monica Vitti (Umberto Eco appeared in a cameo). Filmed on location in Milan, the film is about a day in the life of an unfaithful married couple and their deteriorating relationship. In 1961 La Notte received the Golden Bear at the Berlin International Film Festival, as well as the David di Donatello Award for Best Director. La Notte is considered the central film of a trilogy beginning with L'Avventura (1960) and ending with L'Eclisse (1962). Stanley Kubrick listed La Notte as one of his top 10 favorite films.
(Summary from Wikipedia)