Four Days: Buenos Aires and Uruguay Combo

Four days is not enough to do justice to both Buenos Aires and the whole of Uruguay, and this itinerary does not pretend otherwise. Instead it splits cleanly in two: two days inside the city, concentrated in San Telmo and Recoleta, and two days across the Río de la Plata in Uruguay — a genuinely separate country, reached by a direct fast ferry from Puerto Madero. The honest catch is the second half: Colonia del Sacramento and Montevideo are two different places with two different rhythms, and trying to squeeze both into two days turns a relaxed river crossing into another rushed transfer. This route asks you to pick one.

A city half, a country half

The logic here is deliberately simple. Days 1 and 2 stay inside Buenos Aires, on foot and by Subte, no car needed at any point. Days 3 and 4 cross the river by ferry from Puerto Madero into Uruguay, where a passport and a different currency — the Uruguayan peso, not the Argentine one — apply from the moment you step off the boat. Everything downstream of that split depends on one decision: Colonia del Sacramento, about an hour away by fast ferry, or Montevideo, about two and a quarter hours away on the direct service. Read the choice below before booking anything.

Day 1: San Telmo, market, tango and the old town

Base the first day in and around San Telmo, the barrio built on cobbled streets and permanent antique shops, with the Sunday Feria de San Telmo filling Defensa street and Plaza Dorrego when the calendar allows it. On any day of the week, the Mercado de San Telmo is open for a wander and a coffee, and the surrounding streets reward slow walking more than a checklist.

Work outward from San Telmo toward Plaza de Mayo and the Microcentro in the morning, where the Casa Rosada and the Cabildo frame the political heart of the country, then return to San Telmo for the afternoon and evening. This is also the natural night for tango, and San Telmo offers all three versions of it side by side: street tango performed for tips around the market, dinner-and-show houses aimed squarely at visitors, and the real social dance halls known as milongas. A guided evening through San Telmo’s bars and tango scene is a practical way to see the barrio after dark without guessing which door leads where.

a guided evening through San Telmo’s history, bars and tango scene

For dinner, remember that Buenos Aires eats late: restaurants rarely fill before 21:00, so an early booking is a quiet one. If tango-with-dinner is the plan, pick the show first and build the evening around it rather than the other way around.

Day 2: Recoleta, the cemetery, and one last river view

Move north to Recoleta for the second day, a barrio of wide avenues, embassies and the walled city of mausoleums at its centre. The Recoleta Cemetery is ticketed for non-residents and worth a couple of unhurried hours; Eva Perón is buried here, in the Duarte family vault rather than a monument of her own, and the vault is easy to walk past without staff or signage pointing the way. A short guided walk through the cemetery removes the guesswork.

Nearby, El Ateneo Grand Splendid on Avenida Santa Fe is a converted 1919 theatre turned bookshop, free to enter and a short stop rather than a monument — worth fitting in on the way between the cemetery and lunch. Recoleta also pairs well with a wider first-look at the city if this is your only full day in Buenos Aires proper before Uruguay, combining its grand architecture with a broader orientation.

a guided walk through Recoleta’s cemetery and grand avenues

Spend the afternoon at a slower pace: a parrilla lunch, a walk along the edge of Puerto Madero toward the Costanera Sur reserve if the heat allows it, and an early night before the ferry terminal in the morning. Pack a passport where you can find it — you will need it before the first coffee tomorrow.

Day 3: cross the river — Colonia or Montevideo

This is the fork in the itinerary, and it is worth deciding before you book the ferry rather than at the terminal. Both routes leave from Puerto Madero, both cross an international border with passport control on both sides, and both land you in a country that uses the Uruguayan peso, not the Argentine one.

Option	Crossing time	Best suited to
Colonia del Sacramento	About 1 hour	A relaxed, walkable colonial old town; easier to combine with a light Day 4
Montevideo	About 2 hours 15 minutes	A full working capital city; rewards the overnight far more than a half-day

Choose Colonia if you want cobbled streets, a lighthouse, riverside cafés and a genuinely slow pace — the whole old town is walkable in an afternoon, which leaves Day 4 open for a second look or an easy return. Choose Montevideo if a capital city with markets, a real waterfront and more scale appeals more than a small town, but go in accepting that two days is tight for a city this size — treat it as a first look, not a complete visit.

a private day tour to Colonia del Sacramento a Montevideo day trip with lunch and the return ferry included

Whichever you pick, clear immigration on the Argentine side well before departure, keep the ferry ticket and passport together, and expect a second, shorter passport check on arrival in Uruguay. Currency exchange counters and ATMs are available at both terminals, but rates and available Argentine-peso cash have shifted repeatedly in recent years — check current rules before relying on carrying pesos across.

Spend the rest of the day settling into whichever town you chose: a walk through the old streets, an early Uruguayan dinner (meals run earlier here than in Buenos Aires), and a night’s stay rather than a same-day return, which is what makes the two-day version of this leg worthwhile instead of a rushed shuttle.

Day 4: the second Uruguay day, then home

Use the morning of Day 4 for whichever side of your chosen town you have not yet covered — in Colonia, that might mean the lighthouse and the bastion walls at a slower pace, or a short trip along the coast; in Montevideo, a market, the old city, or the Rambla waterfront. Keep the afternoon light: plan the return ferry to Buenos Aires with a comfortable margin rather than the last sailing of the day, since queues at the terminal and immigration checks both add unpredictable time.

a full-day Montevideo excursion from Buenos Aires

Back in Puerto Madero by early evening, this is also a natural point to close the loop: a final walk along the Buenos Aires riverfront, or simply an early dinner before departure the next morning if your onward flight is out of Ezeiza. Resist the urge to add a fifth stop on the way back — the point of this itinerary is two focused halves, not three rushed ones.

Practical notes for this route

• No car is needed anywhere on this itinerary. The Subte and colectivos, both requiring a SUBE card, cover San Telmo and Recoleta; the ferry covers the river crossing; both Uruguayan towns are walkable or served by taxis.
• Two currencies, two sets of prices. Budget in Argentine pesos for Days 1–2 and Uruguayan pesos for Days 3–4; card acceptance and exchange rules for both currencies change often enough that a same-week check is worth it before you rely on cash.
• Book the ferry ahead in high season. Fast-ferry departures fill up around holidays and long weekends; a booked return time also protects the tight timing of Day 4.
• Keep the passport accessible, not packed away, from the moment you leave San Telmo on the morning of Day 3.
• Don’t try to add both Uruguayan cities. If a second visit to Uruguay is the goal, come back for it on its own trip rather than compressing Colonia and Montevideo into the same two days here.

FAQ about the four-day Buenos Aires and Uruguay combo

Should I choose Colonia del Sacramento or Montevideo?

Colonia suits travellers who want a relaxed, walkable colonial town close to the ferry terminal, reachable in about an hour. Montevideo is a full capital city, about two and a quarter hours away, and rewards an overnight far more than a rushed half-day.

Do I need my passport for the Uruguay leg?

Yes. Colonia and Montevideo are in a separate sovereign country, so both sides of the crossing involve passport control at the ferry terminal, exactly as at an airport border.

What currency do I need in Uruguay?

The Uruguayan peso (UYU), not the Argentine peso. Argentine pesos are not accepted as local currency once you land in Colonia or Montevideo, so plan to withdraw or exchange money after arrival.

Is a car needed for any part of this itinerary?

No. The Subte and colectivos cover San Telmo and Recoleta, the fast ferry from Puerto Madero covers the river crossing, and both Colonia and Montevideo are walkable or served by taxis once you arrive.

Can I really see both San Telmo and Recoleta properly in two days?

Yes, at a comfortable pace: one day per barrio is enough for the main sights, a market or cemetery visit, and a proper lunch, without turning it into a forced march.

What if I only have three days, not four?

Drop to a single day in Uruguay as a day trip rather than an overnight, and keep both Buenos Aires days intact — the ferry schedule makes a same-day return to Colonia realistic, though Montevideo is tighter.

Is this itinerary better in a particular season?

Spring (September to November) and autumn (March to May) are the most comfortable months for the walking-heavy days in San Telmo and Recoleta; midsummer (December to February) is hot and humid, which slows down long days on foot.