Europe 40 Under 40 laureates (2020) Öznur Pınar Çer and Danilo Petta from the Sardinia, Perugia and Istanbul-based firm Mask Architects have designed the first "exosteel" modular prefabricated living houses called “Mother Nature” for Nivola Museum made of steel 3D-printed structures for the museum’s visitors, tourists, and artists in Orani, Italy.