Costanera Sur Ecological Reserve: Free Entry, Hours And What Costs Money

Part of the Costanera Sur visitor guide on Free Things To Do In Buenos Aires.

Quick Facts

Is The Costanera Sur Reserve Free To Visit?

Yes, the Costanera Sur Ecological Reserve is free to visit, and unlike many Buenos Aires attractions the free entry applies to everyone: Argentine residents and foreign visitors walk through the same gate at the same price, which is nothing. There is no ticket desk, no DNI check and no resident-versus-tourist split. That makes it one of the few large green spaces in the city where the free label needs no qualification at all. A free walk meets in this neighbourhood: Costanera Sur Nature Walk.

The reserve sits on reclaimed land beside Puerto Madero, and its status is confirmed on the city's own tourism pages, which list it as free and open to all. In a city where "free" so often means "free for residents with DNI only", the Costanera Sur reserve is the straightforward case. You walk in, you walk the trails, you leave when it closes. Nothing inside charges an entrance fee.

The schedule is the only thing to plan around. The reserve opens Tuesday to Sunday and on holidays. Between April and October, the winter schedule, it runs 8:00 to 18:00. Between November and March, the summer schedule, it runs 8:00 to 19:00, and that longer window is in force across the southern summer. It closes on Mondays, except when a holiday falls on a Monday, and it also closes on 1 May, 24 and 25 December, 31 December and 1 January. Bad weather closes it too, so the city's page is worth a glance before you set out; the same goes for the national weather service at smn.gob.ar when storms are forecast.

There is no time limit, no guided-tour requirement and no booking system for general entry. The reserve is a public natural space, run as protected wetland rather than as a ticketed attraction, which is why the free rule is uniform. Groups and school visits organise their own arrangements, but an independent visitor simply arrives during opening hours.

For a sense of how rare an unconditional free rule is here, compare it with the museum scene described in the free museums guide, where Wednesday free entry means one thing at MAMBA, another at PROA and half price at MALBA. The reserve escapes all of that.

What Is Free Around The Costanera Sur Reserve?

The free zone around the reserve extends into Puerto Madero itself: the Puente de la Mujer, the waterfront promenades and the district's public spaces all cost nothing to walk. The reserve's trails, lagoons and lookout points are the main free attraction, but they sit inside a neighbourhood that is free to explore end to end. Only the food, boats and a few enclosed attractions charge.

The Puente de la Mujer is the free icon of the area, a pedestrian bridge over the docks that you can cross as many times as you like. It is an open public space, with no fee, no hours gate and no access restriction, and it connects the two sides of the Puerto Madero waterfront. The promenades running along the docks are equally free, and walking them is the natural approach to the reserve's entrance.

Inside the reserve, everything visible is free: the trail network, the lagoons, the birdlife and the riverfront stretch facing the Río de la Plata. The reserve was built on land reclaimed from the river, and its value is precisely the wild contrast with the glass towers one street away. There are no paid hides, no paid sections and no premium trail. For more on the neighbourhood the bridge belongs to, see the Puerto Madero and Puente de la Mujer guide. A free walk meets in this neighbourhood: Costanera Sur Nature Walk.

To the north, the free green options continue. The Parque Tres de Febrero and its lakes in Palermo are free to enter and wander, while the paddle boats on those lakes are paid, a split worth remembering when budgets are tight. The Jardín Botánico Carlos Thays is free and closes Mondays, the same closing day as the reserve. The parks and gardens guide maps the full set.

One more free piece deserves a sentence: the Floralis Genérica, the great steel flower in Plaza de las Naciones United Nations, is an open public space with no fence and no fee, and it pairs naturally with a waterfront walk. Open public space is the category to trust here, because it carries no condition, no schedule gate beyond daylight, and nobody at a desk.

What Costs Money At The Costanera Sur Reserve?

Nothing inside the reserve costs money, so the paid items are all around it: the restaurants of Puerto Madero, boat rides on the docks, and, further afield, the Jardín Japonés at ARS 24,000 for non-residents and ARS 8,000 for residents. The Ecoparque, the former zoo, is treated as paid for tourists. None of these are inside the reserve itself. A free walk meets close to this area, Costanera Sur Nature Walk.

Start closest. Puerto Madero is the most expensive dining district in the city, and every table on the docks charges accordingly. That is not a defect, just a fact of the neighbourhood: the free thing is the walk, the paid thing is the meal. Boat rides on the docks and any river excursions are paid operations, separate from the reserve's free trails.

The nearby paid attractions have published figures only where an official page was fetched. The Jardín Japonés charges ARS 24,000 for non-residents and ARS 8,000 for residents, figures from its official page in November 2026. The Ecoparque, the former zoo, is treated as paid for tourists, with no figure published here because its status is contested. Both are outside the reserve, and neither is needed for a full free day in the area.

If a day of free sightseeing is the plan, a guided walk can still fit the budget, because the walks on this site are free, pay what you want: booking costs nothing and you tip the guide at the end. The downtown walks below are the English options, all run on GuruWalk by independent local guides, and none charges a fee.

When Should You Go To The Costanera Sur Reserve?

Go on any day from Tuesday to Sunday, arriving with enough daylight: the reserve closes at 18:00 in the April to October window and 19:00 from November to March, and it closes entirely on Mondays unless a holiday overrides that. Fixed closures are 1 May, 24 and 25 December, 31 December and 1 January, and bad weather shuts the gates at any time. A free walk meets in this neighbourhood: Costanera Sur Nature Walk.

The seasonal split matters more here than at most attractions, because the summer window adds a full extra hour. From November through March, the 8:00 to 19:00 schedule gives evening light on the lagoons, and November visitors catch the summer schedule from the start of the month. From April, the winter 8:00 to 18:00 hours apply.

Weather is the wildcard. The reserve is a wetland on the river edge, and its own rule closes it in bad weather, so a storm forecast can end a planned visit even on an open day. The city's tourism page for the reserve, turismo.buenosaires.gob.ar, is the page to check for the current status, and the national weather service for the forecast. That is the whole of the planning: pick a Tuesday to Sunday, check the sky, go.

How Do You Combine The Costanera Sur Reserve With Other Free Sights?

The natural free route pairs the reserve with Puerto Madero's docks and the Puente de la Mujer, all walkable in one outing with no transport and no tickets. Beyond the waterfront, the free green circuit continues in Palermo: the Jardín Botánico Carlos Thays, Parque Tres de Febrero and the Palermo Soho street art are all free to enter, though they sit far enough away to be their own half day.

The waterfront combination needs no plan at all. The docks, the bridge and the reserve entrance line up beside each other, so a visitor can walk the Puerto Madero promenades, cross the Puente de la Mujer and enter the reserve from the same stretch. Everything in that chain is free open public space. Nothing in it requires a ticket, a booking or a particular hour beyond the reserve's own gate. A free walk meets in this neighbourhood: Costanera Sur Nature Walk.

Palermo is the second free cluster, and it earns its own trip. The Jardín Botánico is free with a Monday closing day, the Bosques de Palermo and the Rosedal are free open parkland, and the Palermo Soho blocks around Plaza Serrano carry the city's best-known free street art. GuruWalk runs a Palermo Soho Street Art tour, guided by Vive Buenos Aires, meeting at Plaza Serrano, rated 4.91 out of 5 across 161 GuruWalk reviews, pay what you want, in English and Spanish, and it is a good way to read walls you would otherwise walk past.

The green-theme option is Palermo Parks and Green Spaces, guided by Pablo on GuruWalk, meeting at the Jardín Botánico entrance on Av. Santa Fe, rated 4.91 out of 5 across 53 GuruWalk reviews, in English, two hours, pay what you want. It is the parks-and-gardens counterpart to the reserve visit, covering the free green side of the city in guided form.

Further out but still free, the Feria de Mataderos is a free market and folklore fair on the city's western edge, and the Sunday scene in San Telmo, the Feria de San Pedro Telmo around Plaza Dorrego, is free to browse. Neither pairs with the reserve in a single morning, but both belong on a free-things list that stretches across the week, and the free Sunday activities guide sequences them.

Which Free Walking Tours Meet Near The Costanera Sur Reserve?

The walk that meets at the reserve itself is the Costanera Sur nature walk by Emanuel on GuruWalk, meeting at Av. Dr. Tristán Achával Rodríguez 1413, rated 4.82 out of 5 across 44 GuruWalk reviews, pay what you want, in English and Spanish, though it has its own directory page on this site. The reserve also sits at the edge of the downtown walking-tour zone, where the GuruWalk options cluster.

That nature walk is the only walk here whose meeting point sits on the reserve's own avenue. It is a Palermo, Parks and Costanera Sur category walk, guided by Emanuel, and it runs two and a half hours. It appears as a walk in this directory rather than among the walks; its GuruWalk page carries the live schedule. Like every walk in the directory it is free, pay what you want, with the tip settled at the end.

The downtown cluster is where the English options are. The hero of the directory, the Free tour of Buenos Aires: Heart of the city by Vive Buenos Aires, meets at the Biblioteca del Congreso on Av. Hipólito Yrigoyen, runs three hours in English and Spanish, and is rated 4.84 out of 5 across 1,332 GuruWalk reviews. It is the deepest free introduction to the city centre, pay what you want, and this site's full walk directory counts 55 free walks in Buenos Aires across both platforms it lists.

None of these walks charges a fee, and none has a fixed price: the model across GuruWalk and freetour.com is pay what you want, settled with the guide at the end. How much to tip is its own question, with no obligation beyond the value you felt, and the walks are booked through each guide's own listing page.

Mistakes That Trip People Up At The Costanera Sur Reserve

The traps are simple ones: turning up on a Monday, assuming the winter hours still apply in summer, counting on entry in a storm, and confusing the free reserve with the paid or conditional attractions around it. Each mistake below comes from the reserve's own rules or from official sources on this site, and each is avoidable with one line of planning. One of the free walks starts in this part of the city: Costanera Sur Nature Walk.

The Monday mistake is the most common. The reserve closes Mondays, as do the Jardín Botánico, the Museo Casa Rosada and the Cabildo, so a Monday itinerary built around all of them collapses at the first gate. The exception is a Monday holiday, when the reserve opens. Second is the season mistake: 18:00 closing feels safe in the winter schedule, but the reserve switches to 19:00 from November, and visitors who plan for the wrong window either leave early or arrive too late to use the light.

Third, weather closes the reserve at any time, on any open day. It is a wetland with riverside trails, and the rule is applied in practice, so the city page is the check, not the calendar. Fourth is the confusion trap: the Ecoparque is not the reserve, and it is treated as paid for tourists, while the Jardín Japonés is outright paid, ARS 24,000 for non-residents. Calling the reserve "the free zoo" or assuming the Japanese garden shares the reserve's free rule is how a zero-peso day quietly acquires tickets.

If a guided walk is part of the plan, these three English options cover the downtown side of the day, all pay what you want on GuruWalk.

Common Questions About The Costanera Sur Reserve