Walking tours of street art in Buenos Aires. I was looking for a modern cultural tour and found graffitimundo. We visited walls, galleries and artists studios, which we couldn't have found ourselves. It was a fantastic way to meet artists and learn more about street art in Argentina.
I can also say that this tour was superb having done it only last week. It was not only well conducted by two lovely girls who knew their stuff, but a really good way to see a bit of the city I hadn't seen before. The street art in BA is incredible and worlds away from what I had seen in the UK. Definitely do it for a great afternoon around town. It cost me around £6 so it's great value.