Okay, this may seem like a silly question, but please bear in mind I've lived a relatively sheltered life.
Do big cities have brothels?
I'm refering specifically to U.S. cities in which prostitution is illegal. Would they actually have a whole building somewhere, or do people just sneak around apartments?
Also, assuming this is a seedy area in a very large city, would said brothel be inconspicuous to avoid unwanted attention from the law, or would they have neon signs up etc. because nobody cares?