Well try Itaewon which is your best bet as it is a red light district and is full of prostitutes, brothel houses and shady massage parlors, Itaewon is like Amsterdam but in Asia. but please remember to bring condoms, just money not credit cards or checkbooks and please play safe!.I went to Itaewon when I was only 21 years old and looking for a good time with my father, and now I feel sick after catching multiple stds including gonorrhea and it hurts!. these girls are expensive so make sure you save up your money before taking a trip to Itaewon.