Santiago’s swish bus terminal is six blocks northwest of Plaza Libertad. For Salta and Catamarca, there are better connections via Tucumán. Bus 20 (AR$6) heads into town from here, but it’s only AR$30 in a taxi.
Buses from Santiago del Estero
Santiago del Estero's twin town La Banda is on the train line between Tucumán (four hours) and Buenos Aires’ Retiro station (23 hours).