Córdoba, Argentina - Rival of Buenos Aires

Córdoba is the second largest city in Argentina, located near the geographical center of the country. The city is a popular tourist destination but most tourist are Argentinian citizens, few foreigns arrive here.
Downtown Córdoba has a great colonial architecture with many sites included in the UNESCO world heritage, including the famous Jesuit Block.
In the colonial time, the city evolved more than Buenos Aires, the National University of Córdoba being founded in 1613 by the Jesuit Order. Because of this, the city is still nicknamed La Docta (roughly translated, "The Learned one").
Some of the best things to do in Córdoba , Argentina:

Explore the city center. Packed with colonial buildings build by the Jesuits in the 17th and 18th centuries you won't regret getting lost on the city streets. The Cathedral and a few other churches in the area are well worth visiting.
Try the local cuisine. Argentine cuisine varies a little from province to province, but in Córdoba you will find restaurants that offer some great dishes at a fraction of the price payed in Buenos Aires. People in Córdoba like their meat so this won't be a great experience for vegetarians.
Córdoba nightlife. As already mentioned the city is a big learning center in Argentina and is packed with students. If you like the nightlife try to visit Córdoba in the spring or autumn when the students are in town and the clubs are full. There are places to cater for all tastes from dingy bars to live shows to the latest and greatest music.