The Oasis was founded in 1997 thanks to a convention among LIPU, the city of Cesano Maderno and Groane Park, where the oasis is situated. It is managed by LIPU - Birdlife Italy, through qualified staff and a huge number of volunteers.
The Oasis reaches 100 hectares of woods and moors, inside an urban and industrialized context. The Oasis consists of important and precious natural areas (like oaks and birches) and declined ones, which have been healed.
Starting from 1998 the area was scenary of a lot of environmental dry docks, such as the realization of a large 12 hectares moist area instead of an ex clay mine. Now there are a lot of canals, rushes, which improve the fauna's colonies, so that visitors can look at them.
Other improvements were: laying the electric lines underground, cleaning up a creek, naturalistic engineering and tree planting.
Moreover the Oasis hosts the Alex Langer environmental education centre, an area where micro habitats are recreated, a parking and an area for the numerous guests.