Michelangelo Antonioni is not for everyone. His films tend to glide along at a leisurely pace, the plot (if there is one) unfolding seemingly despite itself. But for those who can appreciate his meditative tone and the aimless, unhappy wandering of his characters, this is one of his more accessible movies. La Notte is about a married couple who have grown bored with their life and each other, and spend one long night at a friend's party, rethinking and rekindling their marriage. It's a beautiful, introspective look at love with one of the most romantic endings in the movies.
Original Trailer from 1961: