On the former industrial area of ??Milan Portello now stand the green hills of a new urban park. Designed by Charles Jencks and Andreas Kipar, they arise on the ruins of the old factory Alfa Romeo and consist of the excavated material for new construction..Consists of two little hills built with rubble and earth excavation. Of the two reliefs, one at develop and double S in the concavity has a lake, an oasis away from the noise, the other ("Helix") is conical and covered by a double spiral track, one going up and the other to descend without passing each other: the top houses a sculpture.