About the film
Florence: Days of Destruction is a 1966 documentary about the 1966 Flood of the Arno River and its catastrophic effect on the city of Florence. Directed by Franco Zeffirelli, it is Zeffirelli's only documentary, and features the only known film footage of the flood. The film is 50 minutes long, and was produced by RAI.
Released less than a month after the disaster, the film reputedly raised more than $20 million for the reconstruction efforts.
From the film's Wikipedia article (CC BY-SA 4.0).