Primera Junta is a station on Line A of the Buenos Aires Underground. It lies at the intersection of Rivadavia Avenue and Del Barco Centenera street, in the neighborhood of Caballito. The Buenos Aires Historic Tramway (Spanish: Tramway Histórico de Buenos Aires) operates on weekends historic tram cars on a 12-block loop of street trackage used by rapid transit trains en route to the Polvorín workshops.