Located right across the border, this Mexican city of 1.3 million people is a shopper’s paradise, especially in the downtown Zona Rio. The historic district is located in the Zona Centro. Tijuana’s proximity to the US has made it a very popular tourist destination, especially for day-trippers. Taking a taxi to Baja California’s largest city is one way to get there or visitors can take a Blue Line trolley from San Diego to the border crossing at San Ysidro. American citizens can just walk across the border on a day trip from San Diego, but need passports or passport cards to return to the United States.
