Part of a chain that ran from Lima to Buenos Aires during viceregal times, La Posta de Hornillos is a beautifully restored staging post 11km south of Tilcara. Founded in 1772 it was the scene of several important battles during the wars of independence, and remained an important stop on the road to Bolivia until 1908, when the La Quiaca railway opened. The interesting exhibits include leather suitcases, some impressively fierce swords and a fine 19th-century carriage.