I´ve spent in Buenos Aires 3 weeks, not because you really need so much time to see all the main attractions the city has to offer, but just because I had such a great time there. In the middle I'd left for Iguazu, only to return a few days latter, because I've felt I hadn't exhausted Buenos yet, but Iguazu is a totally different story. Actually Buenos Aires is a huge city, with population of 3 million in the city itself, and around 12 million in the metropolitan, and when I first arrived to Buenos I was astonished by its size - we went on a highway for about 40 minutes from the outskirts of the city till its center. But all the attractions are conveniently concentrated in its center, so you don't have to travel
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