Costanera Sur is a popular ecological reserve located in Buenos Aires, Argentina. It stretches along the waterfront of the Rio de la Plata and offers a natural escape from the urban environment. The reserve features walking and biking paths, making it a favorite spot for both locals and tourists to enjoy outdoor activities and observe diverse wildlife. Established in 1986, Costanera Sur covers approximately 865 acres and is home to various plant and animal species. The area serves as an important green space in the city, promoting environmental awareness and providing a habitat for birds and other wildlife. Visitors can enjoy scenic views of the river and the city skyline.