Rien que les heures (English: Nothing But Time or Nothing But the Hours) is a 1926 silent city symphony film by Brazilian director Alberto Cavalcanti showing the life of Paris through one day in 45 minutes.
Other noted examples of the city symphony genre include Charles Sheeler and Paul Strand's Manhatta (1921), Walter Ruttmann's ' (1927), Andre Sauvage's Etudes sur Paris (1928), and Dziga Vertov's Man With a Movie Camera (1929).