World's Most Romantic Cities
Why go: Buenos Aires combines Old World grandeur and tango performances with fabulous nightlife and cutting-edge restaurants.
Where to stay: Originally built as a 19th-century convent, 1555 Malabia House in Palermo Soho is today known as Argentina's first designer B&B. Rooms from $140; malabiahouse.com.ar.
Where to eat: The unmarked entrance to Tegui is hidden by graffiti, but once inside, you'll find ambitious, locally sourced cuisine from hotshot chef German Martitegui.