Córdoba

Córdoba takes 3 days: the Jesuit Block, a set of 17th-century colonial buildings declared a UNESCO World Heritage Site, on one day, and the bars and folk-music venues of the Güemes neighborhood, the hub of student nightlife, on another. March-May is best, avoiding the humid summer heat. It's mid-priced by Argentine standards. It's the country's second most populous city and home to Argentina's oldest university (1613), earning it the nickname «La Docta» and a cultural and nightlife scene rivaled only by Buenos Aires.