Buenos Aires Is Quietly Rebuilding Its Century-Old Subway

City Life

If you live in the Argentine capital, the trains you ride are living history. The Buenos Aires subte is the oldest metro in Latin America, and in 2026 it is being patched, polished and, at last, expanded.

For a newcomer, the subte is the cheapest and often the fastest way around the centre. It opened in 1913, which makes it charming and useful, but also means large parts of it are permanently under repair.

The best way to think about it is as a system in constant restoration rather than a finished machine. According to a detailed network guide updated this year, several stations are being worked on at once.

What is changing on the Buenos Aires subte in 2026

The most immediate change is a closure worth knowing. Tribunales station, right by the famous Teatro Colón opera house, is shut for a full renovation through the year, so travellers to the theatre should get off nearby and walk a few minutes.

There is good news too. Piedras station, on the historic Line A, reopened in June after its own refurbishment, restoring a stop on one of the city’s oldest and most useful routes.

A larger heritage project is under way in parallel. Four stations that are protected as National Historic Monuments are being restored, with waterproofing, new lighting and braille signage, all while preserving their period tiles and features.

The unglamorous work matters most for daily life. A tender is running to renovate dozens of escalators and lifts across five lines, the kind of upgrade that decides whether a station is easy or exhausting to use.

The long-awaited new line

The headline for the future is Line F. The city legislature approved the borrowing to fund it in 2026, and the transport agency is preparing the tenders, with construction officially planned to begin this year.

The context explains why it matters. The last genuinely new line, Line H, opened in 2007, the first in more than sixty years, so a new line is a rare and significant step for a system that has grown slowly.

For residents, the practical takeaway is to plan around the works. Use the reloadable SUBE card, register it with your passport to unlock the cheaper fare, and check which central stations are open before heading out.

Knowing the lines by character helps too. Line A is the historic one, running under the old downtown, while Line D is the fastest and links the centre to the leafy northern barrios where many foreign residents settle.

The paradox of the subte is real. It is central, cheap and genuinely useful, yet its coverage is thinner than that of much younger metros in the region, so buses and ride apps still fill the gaps.

That gap is exactly what the renovations aim to narrow. Between the heritage restorations, the escalator overhaul and the new line, the city is betting that a slow, steady rebuild will finally modernise a much-loved but ageing system.

Which Buenos Aires subte stations are closed?

Tribunales station, on Line D by the Teatro Colón, is closed through 2026 for a full renovation. Travellers heading to the theatre should get off at a neighbouring station and walk the short remaining distance.

Is a new subte line being built?

A new line is indeed coming, as the city approved the financing for Line F in 2026, with construction officially planned to start this year. It would be the first genuinely new line since Line H opened in 2007.

How do I pay for the subte?

You use a reloadable SUBE card, sold at kiosks and stations and topped up at machines or an app. Registering it with your passport on arrival unlocks a much cheaper per-trip fare for residents and visitors.

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