Reserva Ecológica Costanera Sur is a large riverside nature reserve beside Puerto Madero in Buenos Aires. Its paths cross wetlands, lakes, grassy areas and woodland, with the Río de la Plata and the city skyline appearing along the way. Walk or cycle through the reserve and look for birds, butterflies, turtles, lizards and nutria. It is a good choice for a quieter stretch outdoors without leaving the city; bring binoculars if birdwatching is part of your plan.
A wild stretch beside Puerto Madero
Reserva Ecológica Costanera Sur sits between Puerto Madero and the Río de la Plata. The reserve covers roughly 350 hectares and is among Buenos Aires’s largest green spaces. Its wetlands, lakes, grassland and woodland provide a striking change of scene from the nearby streets and waterfront buildings.
The site began as reclaimed land. Nature gradually took hold, and the area was declared an ecological reserve in 1986. Today, paths lead through different habitats and toward the river, where you can see the broad, muddy waters of the Río de la Plata.
Walking, cycling and watching wildlife
You can explore on foot or by bicycle, following the paths through the reserve and stopping at viewpoints along the way. The mix of marsh, woodland and open water draws a wide range of wildlife. More than 300 bird species have been recorded here, including parrots and kingfishers; turtles, lizards, butterflies and nutria are also among the animals you might spot.
Move quietly and give wildlife space. Binoculars are useful for birdwatching, while a camera can help you capture animals that are easy to miss from the path. Bring water, sun protection and comfortable footwear for time outdoors.
Planning your visit
The reserve is open Tuesday through Sunday and closed on Mondays. Weekdays are a good choice if you prefer a quieter walk; weekends are popular for cycling, walks and picnics. Boardwalk access can change when maintenance is needed, so check its status before your visit.
The paths make this a flexible stop: you can take a short walk or spend several hours exploring. Keep an eye on the trail for snakes, which are rarely seen, and take any rubbish with you, especially near the coast.
Häufige Fragen
Where is Reserva Ecológica Costanera Sur?
It is in Buenos Aires, beside Puerto Madero and along the Río de la Plata.
Can you cycle in the reserve?
Yes. Paths in the reserve can be explored on foot or by bicycle.
What wildlife can you see?
The reserve is home to more than 300 bird species, as well as turtles, lizards, butterflies and nutria.
Is the reserve open every day?
No. It is closed on Mondays and open Tuesday through Sunday.
