Among the most visited and populated barrios are Palermo, Recoleta, Puerto Madero, Belgrano, San Telmo, La Boca, Monserrat and Caballito.
The name Barrio Norte refers to the area around Avenida Santa Fe, encompassing parts of Retiro, Recoleta, and Palermo.
Congreso is the area around Congress square, encompassing southeastern Balvanera, northern San Cristóbal and western Monserrat.
Las Cañitas refers to a few blocks around the Campo Argentino de Polo, crowded with trendy bars, fancy restaurants and nightclubs.
The 100 barrios of Buenos Aires), sung by Alberto Castillo, is sometimes invoked (informally) to support the claim that there are indeed a hundred neighbourhoods in the city.