Buenos Aires Modernism: Eight Buildings That Shaped a City

When the Kavanagh building opened in 1936, it was the tallest reinforced concrete building in South America. Commissioned by wealthy landowner and socialite Corina Kavanagh and designed by Luis Sanchez, Ernesto Lagos and Luis María De La Torre, the 1934-36 tower became a beacon of the golden era of Argentine prosperity and opulence.

It also marked the arrival of a movement. Buenos Aires modernism emerged between the mid-1930s and early 1940s, in step with a period of fast-paced change that turned the Argentine capital into a modern 20th-century metropolis. As tango, film and literature flourished, urban developments organised around car use reshaped the city and quickly established it as one of the era's cultural powerhouses.

Architects of the period rejected the heavy ornamentation of European eclecticism and Beaux-Arts styles in favour of avant-garde design: clean lines and streamlined geometry. A homegrown regional style developed, combining European rationalism, Bauhaus-inspired German aesthetics and art deco. Reinforced concrete and industrial materials gained popularity as rapid urban expansion drove demand for construction. Early modernist exponents blended Le Corbusier's theories with local idiosyncrasies to impressive effect.

The movement produced private residences, collective housing that prioritised integration with natural surroundings, and public and cultural buildings. Several early examples still stand out today.

Kavanagh by Luis Sanchez, Ernesto Lagos and Luis María De La Torre (1934-36)

The tower was designed with no expense spared. It came equipped with air conditioning, central heating and tiered garden terraces. Kavanagh hired French designer Jean Michel Frank, who collaborated with local design firm Comte to custom-design several luxurious apartments and the main lobby. The result is considered one of Frank's most emblematic works and remains 100 per cent preserved, with parchment-covered doors and walls, intricate straw marquetry and elegant minimal furniture.

Casa Bigatti-Forner by Alejo Martínez (1937)

Argentine artists Raquel Forner and her husband Alfredo Bigatti commissioned the house to combine their studios and residence under one roof. The interconnecting studios over two levels allowed the couple to converse while working independently, and a double-height glass door maximised sunlight and functionality — Bigatti's monumental sculptures could move in and out of the house with ease.

Ateliers para Artistas by Antonio Bonet, Abel Lopez Chas and Ricardo Vera Barros (1938)

Located on a bustling Downtown corner, this building is a benchmark in Buenos Aires modernism. Its streamlined lines and curved facade carry vertical electric parasols at the intersection. The programme originally included four ground-floor commercial spaces and, above, seven double-height ateliers for artists and architects. Its industrial design features glass bricks and a collective roof garden. The iconic butterfly chair (BKF), designed by Bonet with architects Kurchan and Hardoy as part of the Argentine Austral design group, was first piloted in this project.

Edificio O'Higgins 2319 by Jorge Ferrari Hardoy and Juan Kurchan (1941)

In 1937, Hardoy and Kurchan spent a year in Paris as draftsmen in Le Corbusier's Rue de Sèvres atelier, and their subsequent work in Buenos Aires bore the modernist master's influence. O'Higgins 2319 sits on a narrow plot of just 9.52m by 13.90m, maximised by a transformable design: residents could reconfigure their apartments through moveable partitions and mobile cupboards. Double brick walls, wooden window louvres and cross-ventilation tempered the hot summers.

Eucaliptos / Edificio Virrey del Pino 2446 by Jorge Ferrari Hardoy and Juan Kurchan (1941)

This radical design incorporated two large pre-existing eucalyptus trees, promoting a dialogue between nature and architecture — a concept not tried before in Buenos Aires. Built at the rear of the plot and set back from the road, the building challenged the strict urban code of the time, which called for a uniform street facade. The trees eventually grew so tall they blocked sunlight from many units and had to be cut down. The apartments featured built-in storage, centralised waste chutes, modern refrigeration systems and shared communal areas including a creche, library and in-house canteen.

Casa en Calle La Pampa by Wladimiro Acosta (1936-40)

Set back from the street, this secluded residence served as studio and home for its architect, Ukrainian-born, naturalised Argentine Wladimiro Acosta. His Helios system, developed in 1932, operates here to full effect: a vertical slab shades the house from the blistering summer sun, while the building's positioning and openings maximise winter sunlight. By scientifically adapting modern architecture to regional climates, Acosta shaped the design's geometry and orientation to work with nature. Inside, cross-ventilation, natural light and huge windows frame the verdant surroundings.

Automovil Club Argentino (ACA) - Central by Antonio Vilar and associates (1941-43)

Built during exponential growth in the automobile and petroleum industries and the expansion of the city's road network, the ACA headquarters occupies an entire block in one of the city's most exclusive neighbourhoods to this day. Antonio Vilar worked with a collaborative team of respected modernists including Alejandro Bustillo and Jorge Bunge. The design fuses a symmetrical, marble-fronted rectangular prism housing a museum and administrative and corporate areas with a semi-cylindrical structure at the rear containing a service station and parking.

Teatro Gran Rex by Alberto Prebisch and engineer Adolfo Moret (1937)

Built a year after Prebisch worked on the city's famous obelisk, the theatre applies the same rationalist principles: geometric lines, swathes of marble and minimal ornamentation, a conscious move away from European palace-style theatre aesthetics. Exploiting the widening of the newly inaugurated Corrientes Avenue, Prebisch created a large transparent glass facade that opens a visual dialogue with the street. The column-free interior features a triple-height lobby and an auditorium seating over 3,200 people, reminiscent of New York's Radio City Music Hall.

Together, these buildings show how a generation of Argentine architects absorbed European modernism and rewrote it for local climate, urban codes and ways of living — a legacy that continues to define the fabric of Buenos Aires.