In the 1990s, the area of the Ostia Seaplane Base was occupied by an open landfill site, known for being the scene of the murder of Pier Paolo Pasolini on November 2, 1975.

In 1995 the area caught the attention of an Australian company, which proposed the construction of an oceanarium that would irreparably alter the ecosystem of the mouth of the Tiber.

The 20 hectares of greenery, with an artificial pond in the center, are a refuge and a stopping place for various species of animals (mainly birds) and attract professional photographers and birdwatchers from all over the world.

Inside the oasis there is the "Pier Paolo Pasolini" Literary Park, inaugurated on November 2, 2005, where a concrete sculpture was erected to commemorate the well-known Italian writer and director.

The flora is typical of the maquis shrubland, with Italian buckthorn, bay laurel, giant cane, strawberry tree, phillyrea, sea daffodil, broom, rushes, evergreen oak, lentisk, silver poplar, rosemary, blackberry, willow, cork oak, tamarisk.