Palacio Barolo is a landmark office building, located at 1370 Avenida de Mayo, in the neighborhood of Monserrat,[1] Buenos Aires, Argentina.

Its twin brother, Palacio Salvo, is a building designed and erected in Eclectic style, built by the same architect in Montevideo.

[2] Currently, the building has several travel agencies, a Spanish school for foreigners, a store that sells clothes for tango, offices and studios of architects, accountants, lawyers, and designers.

Staying with the Divine Comedy (in addition to the meter for each canto), the lighted beacon at the top of the building represents the nine choirs of angels.

[4] The lighthouse on the top of the building along with the Palacio Salvo in Montevideo, Uruguay, were designed to serve as a welcome to visitors arriving from the Atlantic Ocean to the Rio de la Plata estuary, similar to the Pillars of Hercules.