The San Telmo Antiques Fair of Buenos Aires is centered in the small Plaza Dorrego, which is transformed each Sunday morning into a flea market, with hundreds of booths selling everything from used tourist "junk" to pricey antiques. It is a great place to browse and people watch. Many sidewalk cafes surround the San Telmo market, so the atmosphere is quite festive. San Telmo is the heart of Buenos Aires' tango district, and we were delighted to see a couple dancing for small change in one of the market's open areas.
The park surrounding the Recoleta Cemetery also has an excellent artisans' market on Sunday afternoon. I thought the shopping was much better at this Recoleta market than in San Telmo. If you love hand-made jewelry, sweaters, or gifts, then you will love the Recoleta artisans' market. The Recoleta market starts a little later than the one in San Telmo, so you can go to San Telmo first and then take a taxi to Recoleta to see the artisans' market and the famous Recoleta Cemetery.