First vote is Buenos Aires - especially as a Yankee, the cost of everything there is SOOOO cheap. I went there a couple years ago when the exchange rate was 3 pesos:$1. Last I looked, it was now 4 pesos:$1. Which makes things insanely cheap. My $150/night hotel room would now be $112.50 , and my $10 steak dinner would now be $7. Second choice would be Madrid, because I love Spain. Things there wouldn't be so cheap, though. The Euro is being stubbornly strong against the dollar.