An interesting series that looks at three post war cities. What made these notoriously sinful cities flourish was a unique gathering of artists, revolutionary political ideas, highly valued foreign money, and an overwhelming feeling of abandonment which was a direct byproduct of World War I's ending. The three-part Canadian CBC documentary Sin Cities focuses on the most notoriously decadent cities in modern history: Berlin, Paris and Shanghai during the 1920s and 1930s. This video focuses on Berlin.