Geobeats

For another feria more popular with locals (although it also attracts some tourists) you can also try the one in Tigre.

The mataderos fair is actually pretty old (it was held more in the center of the city at first) and there are very few tourists who make it there. The majority of the people who go are Argentines and the fair is there because it is where they slaughter cows, so there are natually gauchos and other people selling goods. It is a bit far from the center; for me it is one of the "off the beaten track" . You are correct in sayin there are new street fairs springing up all the time. While they cater to tourists, locals also buy a lot of the goods because they are cheaper than in the stores.

whats really amazing is that i am from Argentina and i had never seen something like that before. I am living in NYC now but looks like a lot of this "new" activities (ferias) had been put in place because of turists. i will recommend to try the Patagonia section instead. good day.

Very interesting activity indeed for an outsider, you get to see a side of Argentine culture at Mataderos Fair that may not be visible in rest of Buenos Aires.