In Saltillo we visited the excellent Museo del Desierto, a museum dedicated to the geology/zoology/botany/anthropology of the Coahuila region. The deserts of the region have a fascinating history from dinosaurs, to mammals, to indigenous tribes, to conquistadors, to modern Mexico.
We went out afterwards for street nachos and to see the city at night.
We also saw our first live banda. It was quite an experience.