ARCHITECTURE · PRIVATE TOURS · 2026
Between the shaded avenues of Retiro and the marble staircases of Recoleta, four French châteaux survive from the years when Argentina had more money than it knew what to do with.
Between 1880 and the Great Depression, Argentine families made fortunes from beef and grain and spent a good part of them on architecture. They hired French architects, imported the stone, the panelling and sometimes the craftsmen, and built private houses on a scale that startled European visitors. Most of those houses are gone. Four of the best are still standing within a short drive of each other, and each one solved the problem of survival differently: one became a military club, one a ministry, one a museum, one a hotel.
That last detail is the useful one, because it decides whether you can get in. Below is what each palace is now, and what visiting actually involves in 2026. We drive architecture guests along this route regularly, and the question that ruins itineraries is always the same one: assuming a building is open because it is famous.
01 · PALACIO PAZ
RETIRO · CÍRCULO MILITAR · 140 ROOMS
The biggest of them all, and you can walk through it
Built for José Camilo Paz, the statesman who founded the newspaper La Prensa, and designed by the French architect Louis-Marie Henri Sortais, this is the largest of the four by some distance: over 12,000 square metres and 140 rooms across four levels. The centrepiece is the Great Hall of Honour, a circular room under a stained-glass dome, lined with imported French marble.
Paz died before it was finished. Since 1938 the building has belonged to the Círculo Militar, the officers' club, which is why it survived intact when its contemporaries were demolished. The Museo de Armas de la Nación, a collection of arms running from the Middle Ages to the Falklands, occupies part of it.
Visiting: this is the one of the four you can properly walk through, and guided tours run several days a week, including Saturday mornings. Two things the guidebooks leave out: the tours are given in Spanish only, and the schedule moves. Write to reservaspalaciopaz@gmail.com to confirm the day before you build an afternoon around it.
→ AV. SANTA FE 750, RETIRO
02 · PALACIO SAN MARTÍN
RETIRO · FOREIGN MINISTRY · 1905 TO 1909
Three houses behind one facade
Facing Plaza San Martín, this was built between 1905 and 1909 for Mercedes Castellanos de Anchorena, to a design by the Norwegian-Argentine architect Alejandro Christophersen. It looks like one building and is in fact three: three separate family residences for the matriarch and her sons, arranged behind a single Beaux-Arts facade around a paved carriage courtyard. It is generally considered Christophersen's finest civil work.
The state bought it in 1936 for the Foreign Ministry. When new offices opened in 1993 the administrative staff moved out, and the palace became what it remains: the ceremonial seat of the Ministry, used for state receptions and treaty signings.
Visiting: the guided tours are suspended. The Ministry's own page says so in as many words, with no reopening date announced. For now this is a facade to admire from the square, not an interior to book, and any guide that tells you otherwise is working from an old page. The carriage gates and the symmetry are worth the stop regardless, and it is a two minute drive from the Palacio Paz.
→ ARENALES 761, RETIRO
Prefer to see them without the logistics? We run private architecture routes through Retiro and Recoleta with a driver who knows which doors are open this month. Book a private tour.
03 · PALACIO ERRÁZURIZ ALVEAR
RECOLETA · NATIONAL MUSEUM · FREE ENTRY
A house that is still furnished
Commissioned by the Chilean diplomat Matías Errázuriz and his Argentine wife Josefina de Alvear, and designed in 1911 by René Sergent, the Paris architect behind several of the grand houses of the 16th arrondissement. It was finished in 1917. The couple had spent a decade in Europe assembling the collection the house was built to hold, and the interiors were fitted out by French specialists: oak panelling, Carrara marble, tapestries, parquetry, with the gardens by Achille Duchêne.
The state bought the house in 1936 and opened the Museo Nacional de Arte Decorativo in it a year later, which is the happiest outcome of the four: the rooms are still furnished, so you walk through a house rather than a gallery.
Visiting: open Wednesday to Sunday, 13:00 to 19:00, and admission is free. Of the four palaces this is the one to prioritise if you only have time for one interior.
→ AV. DEL LIBERTADOR 1902, RECOLETA
04 · PALACIO DUHAU
RECOLETA · PARK HYATT · 1934
The last one built, and the easiest to enter
The last of the line. Completed in 1934 for the Duhau family by the French architect León Dourge, inspired by the Château du Marais outside Paris, and built when the era that produced the other three was already over. It sits on Avenida Alvear, the street that concentrated more of this architecture than any other in the city.
It is now part of the Park Hyatt, connected to a modern wing by terraced gardens that step down the slope towards Calle Posadas.
Visiting: you do not need to be a guest. The Piano Nobile salons inside the palace serve food through the day, and afternoon tea is the thing they are known for. It is the only one of the four where the way in is simply to book a table.
→ AV. ALVEAR 1661, RECOLETA
The four, at a glance
| Palace | Built | What it is now | Can you get inside? |
|---|---|---|---|
| Palacio Paz | to 1914 | Círculo Militar and arms museum | Yes, guided tours, Spanish only, confirm by email |
| Palacio San Martín | 1905 to 1909 | Ceremonial seat of the Foreign Ministry | No, tours suspended, facade only |
| Palacio Errázuriz | 1911 to 1917 | Museo Nacional de Arte Decorativo | Yes, Wednesday to Sunday, 13 to 19, free |
| Palacio Duhau | 1934 | Park Hyatt Buenos Aires | Yes, book a table at the Piano Nobile |
How to see them in an afternoon
The four sit within about two kilometres of each other, but the walk between Plaza San Martín and the upper end of Avenida Alvear is uphill, on narrow pavements, past the busiest traffic in the city. Done by car it is a twenty minute loop with three stops, which leaves the afternoon for the two interiors that are actually open rather than for the walking.
A practical order: Palacio Paz in the morning if you have a confirmed tour, Palacio San Martín on the way past for the facade, the Museo de Arte Decorativo after one o'clock when it opens, and tea at the Duhau when the light goes.
Plan your private heritage tour. Message us on WhatsApp at +54 9 11 2404-0448 or book a private car for an afternoon through Retiro and Recoleta with a driver who knows the city.