Where to stay: For more of a sexy, urban vibe, head to Argentina's capital, which feels like South America meets old-world Europe meets New York. The Park Tower is an upscale, sophisticated accommodations option, while The Legado Mitico, seen here, is a more affordable, timeless boutique hotel (with cute decor for group photos).
Where to party: Warning: parties in Argentina can last until breakfast, so party at your own risk. Local favorite boliches, or nightclubs, are Palacio Alsina (a favorite stop for up-and-coming DJs) and Niceto Club, which is located in the Palermo Hollywood district (a great area to wander to discover more clubs, restaurants, and trendy bars and cafes).
What to pack: For those all-nighters, bring flats, in case your feet won't last for hours in killer heels!
When to go: The seasons in Buenos Aires are the opposite of the US; Fall there is March through May, while Spring is September through November. But for gorgeous photos and scenery, visit in October and November, when the gorgeous jacaranda trees are in bloom.