One of Buenos Aires’s most quietly traditional places, Café Tortoni (Avenida de Mayo 825) has made no concessions to the 21st century and only a few to the 20th: Upholstered chairs and marble tables stand among sturdy columns beneath a ceiling punctuated by stained-glass vitraux, the wallpaper looks original between the stained wooden trim, and walls are decorated with pictures, portraits, and filete, the traditional porteño sign-painter’s calligraphy.

Acknowledged on the walls, past patrons include singer Carlos Gardel, La Boca painter Benito Quinquela Martín, dramatists Luigi Pirandello and Federico García Lorca, and pianist Arthur Rubinstein; more recently, it’s hosted Spain’s King Juan Carlos I and Hilary Rodham Clinton. The original entrance faced Rivadavia, on the north side, but Torcuato de Alvear’s creation of Avenida de Mayo forced it to reorient itself.