12th Street Oakland City Center station

12th Street/Oakland City Center station is an underground Bay Area Rapid Transit station located under Broadway between 12th Street and 14th Street in Downtown Oakland, adjacent to the Oakland City Center. It is the second-busiest BART station in both Oakland and the East Bay , and the 6th busiest BART station overall, with a daily ridership of approximately 13,900 in February 2020.
The station has three underground levels, with tracks on the second and third levels. It is served by the Richmond–Millbrae line, Berryessa/North San José–Richmond line, and Antioch–SFO/Millbrae line, as well as by AC Transit buses on the surface.

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