2) Plaza Dorrego in San Telmo. All the bars and restaurants surrounding the plaza always have tables and chairs out. It’s a great place to grab a seat and enjoy the atmosphere both when the sun is out and when the sun is down. However, remember that every Sunday is when the antique markets take over, so no ‘patio’ seats during the day.
3) Corner of Santa Fe and Coronel Díaz. 3 out of the 4 corners are a restaurant café. Due to the Alto Palermo shopping mall, the merchants on Santa Fe and the convenience of the Bulnes subway station, they make this corner a very busy one and full of action all the time. All 3 restaurants have outdoor seating, but given the super busy car and people traffic at this intersection, I’d recommend you to stay inside but get a window seat to enjoy the people watch from ‘afar’.
4) Last but not least, the green plazas in Recoleta and the Palermo parks. On a nice sunny day on the weekends, everyone would be out to enjoy the warm weather and get active. You will see people doing all kind of fun things, from playing music, rollerblading, to practicing trapeze hanging from a tree or playing with their dogs. There are many food and drink vendors in the parks at your disposal.
The great thing about being in this amazing city Buenos Aires is that whenever you have enough of people watching and want to get in on the action yourself, there are many things you can do. Pick up a newspaper, magazine, or simply look up Buenos Aires Tours online, you will face with tons of options that deciding what to do will become your next challenge.