Sin City is a nickname that may be applied to an urban area (a city or part of) that caters to various vices. These vices may be legal (depending on area) or illegal activities which are tolerated.
Examples of such vices include sex-related services (prostitution, strip clubs, sex shops, etc.), gambling (casinos, betting shops, etc.), or drug use (alcohol, marijuana, etc. consumption), and even excessive organized crime and gang activity. If the city is known for prostitution, it is often called a red-light district, as in Amsterdam, Netherlands.
Cities or areas that have this reputation include:
its infamous 'Sin City'
Bombay, the sin city, accounts for a large chunk of the spread of the virus through sex.
The film [Priya] was critically acclaimed in Kerala for its realism and for confirming the conventional image of Bombay as sin city, where most of the film is shot on location, with numerous dingy night scenes.
Nicknamed 'Sin City,' it is the centre of the Philippines sex industry and a magnet for travellers known as 'whorists', who want to have sex with young girls.
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