The movie features the Reeperbahn district of Hamburg, the latter of which was the third largest seaport in Europe, surpassed only by Rotterdam and London. It was famous for Europe s most wicked section, the Reeperbahn, where the nightlife begins in the morning at the cabarets, peep shows, dance halls, and movies that the motion picture code would rate XXX, if such a rating had existed at the time in its rules. Strippers is a mild description for performers who virtually are nude when they make their initial appearance. A special street, where no women visitors are permitted, was blocked off for prostitutes, who parade their wares for inspecting, prospective clients or merely for male "window" shoppers. Director Richard Brooks spent a week in this section of the city, filming inside and outside the Salambo cabaret, the most popular night spot on the Reeperbahn.