The mistake is to stop at the silver one. In the Plaza Carso development on the edge of Polanco, two museums face each other across a plaza, both funded by branches of the Slim-adjacent Mexican fortune, and one of them is impossible to miss: the Museo Soumaya, Fernando Romero’s mirrored, hourglass-shaped tower wrapped in tens of thousands of hexagonal aluminium tiles, the building that ends up on every postcard. People photograph the Soumaya, go inside for the Rodins, and leave. They walk right past the better museum.

That is the Museo Jumex, and it sits directly beside the Soumaya — same plaza, completely different temperament. Where the Soumaya shouts, the Jumex is a quiet block of travertine by the British architect David Chipperfield, opened in November 2013, raised on a row of slender columns with a sawtooth-toothed roofline. It holds the contemporary-art collection built by the Jumex juice fortune — the company is one of Mexico’s biggest fruit-juice producers — through the Fundación Jumex Arte Contemporáneo, and that collection is among the largest and most serious private holdings of contemporary art in Latin America. And it is free.

Free, and worth the trip

Let me lead with the thing that should change your plans: general admission to Museo Jumex is free, no reservation required. In a city where the great institutions are mostly cheap anyway, this still stands out, because the Jumex is not a civic collection padding out a tourism budget — it is a privately funded contemporary museum giving away access to genuinely first-rank international and Mexican art. You walk in. The hours are Tuesday to Friday 10am–5pm, Saturday 10am–7pm, Sunday 10am–5pm, closed Mondays, and the longer Saturday hours make it the easy weekend pairing with the Soumaya next door.

The address is Boulevard Miguel de Cervantes Saavedra 303, in the Granada colonia on the northern edge of Polanco. This is a redeveloped industrial zone turned into the Plaza Carso complex — there is a mall, offices, the two museums, and a lot of polished granite — so it does not have the leafy, restaurant-lined feel of Polanco proper a few blocks south. Get there by the Metro to Polanco station (Line 7) and walk, or simply take a ride-hail; from Polanco or Reforma it is a short hop, and most visitors arrive by car or app.

The building

Spend a minute on the Chipperfield design before you go up, because it is doing quiet, careful work. The whole museum is faced in warm Mexican travertine, and it stands on a forest of thin pillars so that the ground floor is an open, shaded plaza you can walk under — a deliberate breathing space against the hard plaza outside. The signature is the sawtooth roof: a row of north-facing skylights, like a saw blade in profile, that floods the top-floor galleries with even, indirect daylight. It is a classic museum-lighting trick borrowed from old industrial workshops, and it means the upper gallery is one of the better-lit large rooms for art in the city — no harsh sun, no flat fluorescent wash, just steady northern light.

The galleries stack vertically. You move up through the floors, and the building is restrained on purpose so that the art, not the architecture, carries the rooms — the opposite of the spectacle next door. After Chipperfield’s measured spaces, the Soumaya’s swooping interior feels even more theatrical by contrast, which is a good reason to do Jumex first, Soumaya second if you are doing both.

The ground-floor plaza under the building is worth pausing in rather than rushing through. Because Chipperfield raised the whole mass on columns, the space beneath the museum is open to the air on all sides — shaded, breezy, a deliberate void carved out of an otherwise hard granite development. The foundation uses it for outdoor commissions and events, and even when it is empty it functions as a kind of decompression chamber between the noise of the Plaza Carso outside and the quiet of the galleries above. It is one of the few genuinely generous public gestures in a complex otherwise built around shopping and offices.

What you will actually see

This is a collection museum that runs rotating exhibitions rather than a fixed permanent display, so I will not promise you a specific work on a specific wall. The Jumex holdings are deep in postwar and contemporary art — major international names alongside a strong line of Mexican and Latin American artists — and the foundation programmes ambitious temporary shows and retrospectives drawn from the collection and from loans. The practical consequence: check what is currently on before you go, because the experience swings entirely on the exhibition up at the time. When the programming is good, and it usually is, this is the best contemporary-art room in Mexico City. There is also a small shop and a café, and the foundation runs talks and events worth scanning the calendar for.

Pairing the day

The obvious pairing is the Soumaya, ten steps away, also free, with its Rodin casts and European collection — worth it for the building if nothing else. Beyond the plaza, walk south into Polanco proper for lunch: the district has more high-end restaurants per block than anywhere else in the city, including some of Mexico’s most celebrated kitchens, though it leans expensive and reservation-only at the top end. For something looser, Avenida Presidente Masaryk is the boutique-and-café spine, and the green Parque Lincoln a few blocks in is a pleasant decompression after a morning of galleries.

If you have a full day of museums in you, the Jumex and Soumaya pair naturally with a different trip on another day to Chapultepec, where the Museo Tamayo and the heavyweight Museo Nacional de Antropología sit — but do not try to chain all of those in one afternoon. The Jumex deserves an unhurried hour or two on its own. It is free, it is quietly one of the best things in Polanco, and it is standing right next to the building everyone photographs instead.

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Frequently asked questions

Is Museo Jumex free?
Yes. General admission to Museo Jumex is free, with no reservation required. Some special programmes or events may differ, but the galleries are open at no charge.
Where is Museo Jumex?
At Boulevard Miguel de Cervantes Saavedra 303, in the Granada/Polanco area of Mexico City, directly beside the Museo Soumaya in the Plaza Carso development.
What are the opening hours?
Tuesday to Friday 10am to 5pm, Saturday 10am to 7pm, Sunday 10am to 5pm, closed Mondays. Hours can vary around exhibitions, so check before a long trip across the city.
Who designed the building?
The British architect David Chipperfield. It opened in November 2013, clad in travertine with a distinctive sawtooth roof that brings even northern light into the top-floor galleries.
What is the collection?
Contemporary art assembled by the Jumex juice-company fortune (Fundación Jumex Arte Contemporáneo) — one of the largest private contemporary collections in Latin America, shown in rotating exhibitions rather than a fixed permanent hang.