San Salvador de Jujuy
San Salvador de Jujuy is the capital of Argentinas Jujuy Region.
Several companies run buses from Salta to Jujuy. The journey takes about 2.5h.
Several companies also run to and from the Bolivian border. Make sure you buy your bus ticket in the same country as the majority of the journey you are undertaking, since getting refunds or reductions for split/delayed journeys is difficult once you cross the border.
There are flights to the Gobernador Horacio Guzmán International Airport