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Edificio Kavanagh

Kavanagh building: much more than you wanted to know

Full backstory, construction, legend and later history of Buenos Aires' most famous stepped skyscraper.

Bottom line

Edificio Kavanagh is a stepped residential skyscraper in Retiro, Buenos Aires, at Florida 1065 facing Plaza San Martín. Commissioned by Corina "Cora" Kavanagh and built from 1934 to 1936, it was planned as a luxury rental tower (edificio de renta) and became one of the city's best-known modern buildings. Its triangular lot, reinforced-concrete structure and terraced profile made it a landmark of 1930s Buenos Aires. A reported construction cost of 5,000,000 pesos moneda nacional works out to roughly US$350M in 2026 dollars.

Part of its fame comes from the stories attached to it. The most repeated version says Corina built the tower out of spite after the Anchorena family rejected a romance, placing it where it would block the view from their palace to the Basílica del Santísimo Sacramento. Other retellings turn her into the building's architect, or shift the romance to a daughter she did not have.

The records point to a less theatrical history. Corina commissioned and financed the project, but the design is attributed to the studio of Sánchez, Lagos y de la Torre. The view-blocking effect is real; the romantic-revenge motive is weakly documented, contradicted by chronology and best treated as urban legend.

The main source here is chapter VII of Leonel Hernán Contreras' Rascacielos Porteños (2006). I cite it below as Contreras (2006), and flag places where press or tourism sources give different versions.

Construction was led by engineer Rodolfo Cervini's firm. The reinforced-concrete structure went to Empresa Argentina de Cemento Armado (E.A.C.A.). Buenos Aires tourism itself presents the revenge story as legend, not confirmed fact (Turismo BA).

The Kavanagh building seen across Plaza San Martín in Buenos Aires.
The Kavanagh from Plaza San Martín. Marcos Prack, CC BY 2.0, via Wikimedia Commons.

Who Corina "Cora" Kavanagh was

Corina Kavanagh (1890–1984) was born into a wealthy Irish-Argentine family, though not one of Buenos Aires' old patrician clans. Elite society treated families like hers as "nuevos ricos," or new money (ArchDaily). Her money came from inherited land around Venado Tuerto, Santa Fe. To finance the tower, she sold estancias there without taking bank loans.

She married three times, and none of those marriages seems to have been happy. The first was arranged, to a much older Irish-Argentine landowner; they had no children and spent years in Europe. Her second marriage, to the doctor who had treated her first husband, was later annulled. Her third husband was Héctor Gustavo Casares Lynch, from a patrician family. She remained childless.

She was a society figure and antiques collector, and reserved the entire 14th-floor apartment for herself: about 700 m², with its own terraces. Sources disagree on whether she really lived there long-term. After her rental income collapsed, she moved to smaller units in the building, where she lived until her death in 1984.

Recent accounts present her less as a jilted romantic and more as an under-credited patron of 1930s architecture and one of the city's early female real-estate developers. Marcelo Nougués makes that case in Cora Kavanagh y su edificio (2023), treating the revenge tale as folklore. Almost no letters or interviews from Corina survive; what remains in oral tradition is mainly the "adulterated version" of the Anchorena romance (ArchDaily).

Why it was built

The documented reason was a private rental development: an edificio de renta meant to recover most of the capital invested. Around 1933 Corina sold rural holdings to build it, planning to rent the apartments to wealthy Buenos Aires families still able to afford them after the economic crisis. Before Argentina's horizontal-property regime normalized condominium ownership, towers like this usually had one owner and many tenants.

The site mattered. The triangular lot at Florida and San Martín belonged to Carlos Alfredo Tornquist, who had once planned to extend the neighboring Plaza Hotel across the whole block. The 1930 crisis killed that plan, and he sold the parcel to Corina (Contreras 2006). Plaza San Martín was one of the city's aristocratic stages, bordered by Anchorena, Paz, the Plaza Hotel and Retiro Station.

The city had marked this spot as a gateway near the Retiro rail terminals, which helps explain why it allowed the Kavanagh to rise to full skyscraper height. Argentina's heritage office describes the result as a luxury concrete paquebote (ocean-liner mass) inserted into that upper-class setting (Argentina.gob.ar).

How it was built

Site clearing began in 1933. Structural work ran through 1934–1935, and the building was inaugurated on 15 January 1936 after about 20 months of construction. At completion it was the tallest building in Argentina and Latin America: roughly 110 m to the roof and about 120 m to the mast tip, with around 30 floors. It held the Latin American height record until 1947.

The stepped, terraced form was practical as well as aesthetic. The building had to fit a triangular lot, so it was composed of joined volumes that give it a ziggurat-like silhouette often read as a ship's prow pointed toward the Río de la Plata. Municipal height and setback rules shaped the massing and created garden terraces for many units. Unusually for Rationalist work, it also uses the natural slope of the Plaza San Martín ravine rather than pretending the site is flat (Moderna Buenos Aires).

For its time the engineering was ambitious: a reinforced-concrete skeleton, early central air-conditioning, a bank of high-speed elevators and thoroughly modern apartments. One quirk survives: the Kavanagh has no garages and no intercom. Visitors announce themselves at reception, which phones the apartment. The original central A/C no longer runs (ASCE; Contreras 2006).

Stylistically it is usually labeled Rationalist / Modernist / Art Deco, though it is not doctrinaire modernism. Argentina's heritage office reads it as a hybrid of New York vertical Art Deco, French nautical metaphor and local Beaux-Arts tradition (Argentina.gob.ar).

Tall stepped facade of the Kavanagh building rising against a clear sky.
The stepped tower profile that made the Kavanagh a 1930s landmark. Liam Quinn, CC BY-SA 2.0, via Wikimedia Commons.

The spite legend and why it doesn't hold up

The standard tale says Corina fell for an Anchorena heir, that the family rejected the match as beneath them and that she retaliated by building a tower that blocked the Anchorenas' view from their palace to the Basílica del Santísimo Sacramento, their family church and mausoleum (Turismo BA).

The story fractures under scrutiny:

  • Multiple incompatible variants exist. Some cast a daughter of Corina falling for an Anchorena; Corina had no documented children (La Nación).
  • The chronology fails. Mercedes Castellanos de Anchorena died in 1920, over a decade before the Kavanagh was built; the palace was sold to the state in 1936.
  • Historian Daniel Balmaceda calls the Corina–Aarón de Anchorena marriage-revenge story "fake," finding no evidence of any marriage project between them. Other historians likewise find no documentary trace of the romance or the feud.
  • Nougués adds that an earlier Plaza Hotel expansion plan would have blocked the basilica years before the Kavanagh existed, and that selling estancias purely out of spite would have been economic madness.

Some versions cast Mercedes as Corina's rival, others as her friend. That looks less like preserved memory than a motive reverse-engineered from the building's obvious geometry. The view-blocking effect is real; the revenge motive is unproven and probably mythologized. The legend endures because the urban geometry fits it perfectly: the basilica's front is now famously best seen from the narrow Pasaje Corina Kavanagh (La Nación).

Facade of the Basílica del Santísimo Sacramento seen from Pasaje Corina Kavanagh.
The basilica facade from Pasaje Corina Kavanagh, the view the legend is built around. Banfield, CC BY-SA 2.5 AR, via Wikimedia Commons.

The Anchorena side

The "spited" building is today Palacio San Martín (formerly Palacio Anchorena), built in the early 1900s for Mercedes Castellanos de Anchorena. The Argentine state acquired it in 1936 for the Foreign Ministry (Cancillería Argentina). Mercedes funded the Basílica del Santísimo Sacramento and is buried in its crypt. The supposed love interest, Aarón de Anchorena, was a celebrated bachelor-adventurer who married Zelmira Paz in 1933, with no record of any tie to Corina.

Facade of Palacio San Martín, formerly Palacio Anchorena, in Buenos Aires.
Palacio San Martín, the former Anchorena palace. Liam Quinn, CC BY-SA 2.0, via Wikimedia Commons.

History after completion

The Kavanagh opened with a reputation for modern apartment living and later entered literature and magazine culture. Under Perón's first governments (1946–1955), it was attacked as a bastion of the landed aristocracy. Accounts say Evita considered buying or expropriating it for workers. During the 1955 church burnings, some tried to set the building on fire; the attempt was reportedly stopped only because Perón's Secretary of Commerce lived there.

Over the decades, residents have included politicians, journalists, chefs and other public figures. Corina's 14 A penthouse later passed through banking and foreign owners.

The late arrival of horizontal-property law cost Corina her building. The Kavanagh was conceived as a single-owner income property. Rent-freeze laws of the 1940s locked nominal rents while inflation gutted their real value, and until Ley 13.512 (1948) there was no legal way to sell apartments individually. When by-unit sale finally became legal, she sold nearly every apartment under pressure, kept only two smaller units and lost much of her fortune (Contreras 2006; La Nación).

Recognitions

  • 1936: Municipal Prize for Collective Housing and Façade.
  • 1939: Honorable Mention from the American Institute of Architects (AIA).
  • 1994: ASCE International Historic Civil Engineering Landmark (ASCE).
  • 1999: Declared a Monumento Histórico Nacional (Decree 349/1999) (InfoLEG).

The UNESCO claim is false. Tourism copy and even Contreras sometimes list a 1999 "UNESCO World Heritage of Modern Architecture" recognition. No such UNESCO category exists, and the Kavanagh is not a UNESCO World Heritage Site (UNESCO: Argentina). What happened is simpler: Argentina declared it a National Historic Monument, and modernist registries such as DOCOMOMO also list it. Those got conflated with "UNESCO." Treat every "UNESCO World Heritage" statement about the Kavanagh as incorrect.

Present day

The Kavanagh remains primarily a private residential building, not a museum. It has the practical problems of an old luxury tower: costly maintenance, no garages, no modern amenity package and heritage constraints. Units still come up for sale from time to time, including the long-marketed 14 A penthouse.

In 2025, Cora Café opened in the ground-floor commercial area after a long approval process with the owners' association. It was the first gastronomic venture in the building and operates under restrictions, including no kitchen or open fire (La Nación: Cora Café).

Sources by topic

Topic Source
Primary technical/historical monograph Leonel Hernán Contreras, Rascacielos Porteños (Gobierno de la Ciudad de Buenos Aires, 2006), ch. VII.
Biography Marcelo Nougués, Cora Kavanagh y su edificio (2023), via ArchDaily
National Monument decree InfoLEG: Decreto 349/1999
Engineering / technical ASCE
Heritage framing Argentina.gob.ar
Architecture Moderna Buenos Aires
Legend debunking La Nación (basílica) · La Nación (Balmaceda)
Corina's life Bulletin of Advanced Spanish
Palacio San Martín Cancillería Argentina
Present-day / Cora Café La Nación (2025)