Zona Norte is a red light district

Red Light District

Red Light District may refer to:* Red-light district - a neighborhood where prostitution is common* The Red Light District - the title of the 2004 album by rapper Ludacris* Red Light District Video - a pornography studio based in Los Angeles, California...

 located in Tijuana, Mexico. It is known for its brothels, street prostitution

Street prostitution

Street prostitution is a form of prostitution in which a sex worker solicits customers from a public place, most commonly a street, while waiting at street corners or walking alongside a street, but also other public places such as parks, beaches, etc. The street prostitute is often dressed in a...

, and illicit drug sales. Due to its proximity to San Diego, California

San Diego, California

San Diego is the eighth-largest city in the United States and second-largest city in California. The city is located on the coast of the Pacific Ocean in Southern California, immediately adjacent to the Mexican border. The birthplace of California, San Diego is known for its mild year-round...

, it is frequented by US citizens

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 as well as locals. The district is also known La Coahuila for the name of the primary avenue that runs through it.
Prostitution is permitted in Tijuana's North Zone, designated a Zona de tolerancia, or "tolerance zone".