I love Buenos Aires (BsAs), for me personally it outrank Amsterdam my previous number one! We spent 5 days, but we´ll come back on our way home - there is still more to be seen.
Although their is some amazing architecture, and nice shopping areas, and very European like small streets with old buildings - Maybe it´s mostly the atmosphere - it´s lively, loud, spontaneous and informal! We walked a lot, and spent time at roadside stalls, watched Tango dancing on the square, and waterholes are plentifull. We joined one of the city tours on bycicle, it was good fun and very interesting.
Love it, will come back for more! groete,ada.