Personally, my favourite part of Buenos Aires is La Boca, the proclaimed artists' sector of Argentina's capital city. It is said that the buildings are painted the way they are because when the immigrants arrived in the 1800s they couldn't afford to buy paint at full price, and thus settled for anything they could get (ending up with all of the colors nobody had used).

Shown are a few examples of some of La Boca's many colorful streets: