Arganzuela Park, within the Madrid Rio project, has been invented as the huge open green lung in the south of Madrid, accessible from the very heart of the city.

The services business of ACCIONA has helped the park to triple its size, from 84,000 m² to 232,700 m². Noteworthy among the works performed were the planting of 10,000 new trees and 122,300 bushes, the urban beach (a request from the children of Madrid), 10 fountains, five children's play areas and sports areas, such as skating facilities and a football pitch.

During the entire construction process, ACCIONA applied its quality, environmental and sustainability policy, such as the use of machines and electrical vehicles and the recycling of materials to minimise CO₂ emissions and to contribute to the capital city's sustainable development.