A section of Portland Street, particularly between Argyle Street and Dundas Street, hosts arguably Hong Kong's most famous red light district (serving mostly local Chinese clientele) and a popular scene in Hong Kong films. There, underneath a dizzying and chaotic array of neon signs, one can find prostitutes from around the world (although mostly from mainland China) serving in hundreds of massage parlours, night clubs, karaoke/hostess bars and brothels. Although prostitution is legal in Hong Kong, law enforcement is often active in this area conducting raids for prostitutes who entered Hong Kong illegally or have overstayed their visas or to search for under-aged prostitutes, pimps, human traffickers and triad activities.