Nowadays there are burgers and breweries just about everywhere but Burger Joint was the OG good burger in Buenos Aires. Despite having the best beef, burgers here were always lacking. Local's used to look down on the burger as just a frozen patty for fast food and to ground up good meat was seen as an insult to a good steak (I mean, I get it).
But luckily for us, they've come around. You can get a great burger all over the city, but Burger Joint was one of the first on the scene and it hasn't changed since (from the quality of their burgers to their grungy graffiti interior).
I love their Mexican burger with guacamole, but they have a few other greats on their limited but great menu.