Córdoba Avenue is one of the principal thoroughfares in Buenos Aires, Argentina.
Mayor Torcuato de Alvear, inspired by the urban redevelopment works in Paris at the hand of Baron Haussmann, drew up master plans for major boulevards, running east to west, every six blocks. During the 1880s, Córdoba Avenue was included in the plan and widened. The Buenos Aires Metro authority at the time, operated by the Spanish-Argentine concern CHADOPyF, built Line largely under Córdoba Avenue during the 1930s. Following the popularization of the automobile in Argentina during the 1960s, a 1967 ordinance made the avenue a one-way thoroughfare, east to west (making Córdoba Avenue one of the major routes used by the city's evening commuters).
The avenue's outset at Eduardo Madero Avenue is the continuation of Cecilia Grierson Street in Puerto Madero. Past this point, Córdoba Av. enters downtown Buenos Aires and passes along the northern end of the financial district. Microsoft's Latin American headquarters, opened in 2000, and the 42-story Alas building are located on this corner; the Alas building, built in the early 1950s by the administration of Juan Perón for the Argentine Air Force, was the tallest in Argentina until 1995. Past Leandro Alem Avenue (the city's original shoreline), the avenue climbs around 15 m (50 ft) in a block-long segment known as "el bajo" - an incline where the riverfront once was. The Lancaster Hotel, located at the top of the incline, is where writer Graham Greene stayed in Buenos Aires while writing his celebrated mystery, The Honorary Consul.