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Reserva Ecológica Costanera Sur

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Reclaimed wetlands in Reserva Ecológica Costanera Sur Park Reserve in Buenos Aires, Argentina.

This ecological reserve, the city’s largest green lung, spans 350 hectares and includes forests, pastures, lagoons and marshes. In addition, the place offers the best natural viewpoint of the Rio de la Plata and is an excellent spot for bird-watching. Guided tours are organized regularly, or you can visit it on your own through well-marked trails.

Interpretation Center & Tours

Enter the reserve either at the north or the south. Step inside the interpretive center at the south entrance to learn about the reserve and its trails which range from 2km to almost 8km long.

People enjoying a sunny day in the Reserva Ecológica Costanera Sur in Buenos Aires, Argentina.
People enjoying a sunny day in the Reserva Ecológica Costanera Sur in Buenos Aires, Argentina. martin SC photo/Shutterstock

Free guided tours are offered on Tuesdays, Wednesdays, Thursdays and Sundays at 2pm. The tour, which starts at the north entrance, is a leisurely three-hour walk led by friendly guides who explain the reserve’s history, ecology and wildlife. Monthly full-moon tours are available - check online for the latest schedule.

Birdspotting Hot Spot

Bring binoculars if you're a birder – ducks, swans, woodpeckers, parakeets, hawks, flycatchers and cardinals are just a few of some 300 species of birds that can be spotted here.

View of the lagoon at the Reserva Ecológica Costanera Sur in Buenos Aires, Argentina.
View of the lagoon at the Reserva Ecológica Costanera Sur in Buenos Aires, Argentina. vitormarigo/Shutterstock

The reserve's nursery, with over 100 species of native plants, can be visited with the accompaniment of a guide.

Further in at the reserve's eastern shoreline you can get a close-up view of the Río de la Plata’s muddy waters – a rare sight in Buenos Aires.

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