"Berlin Alexanderplatz" is a novel written by Alfred Döblin, first published in 1929. It is set in Berlin during the Weimar Republic and follows the life of a man named Franz Biberkopf, who struggles to reintegrate into society after being released from prison. The narrative captures the vibrant and chaotic atmosphere of the city, reflecting the social and political changes of the time. The novel is known for its innovative narrative style, incorporating stream-of-consciousness techniques and a collage of voices. It has been adapted into various forms, including a famous film directed by Rainer Werner Fassbinder in 1980, which further popularized the story and its themes of alienation and urban life.