A tree grows in this Italian house that is at one with nature

Carlo Ratti and Italo Rota complete house in Italy's Parma region, the Greenary, that blends nature and technology, for food company CEO Francesco Mutti

Greenary by Carlo Ratti with the tree seen from the outside
(Image credit: Delfino Sisto Legnani and Alessandro Saletta)

If you were passing by this house in the idyllic Parma countryside, you'd be forgiven for doing a double take; yes, that is a tree growing inside it. The Italian house does not necessarily stand out in other ways – through expressive shapes or unusual colours, for example – and it blends effortlessly into its landscape. Yet it's a project borne out of the marriage of opposites, explain its authors, Italian architects Carlo Ratti and Italo Rota. Welcome to The Greenary, the sustainable family home of Francesco Mutti, the CEO of one of the country's most famous food companies, the family-owned tomato empire, Mutti.

The project came to the architecture team – Ratti and Rota each leads an independent practice, in Turin and Milan, respectively – after meeting the client through a competition to work on some parts of the Mutti factory. Mutti, Ratti and Rota hit it off and soon it was proposed that the architects (who in the meantime won the factory competition and are currently working on a few long-term projects on the campus) rework a humble, old residential building on the edge of the factory site into a family home. The existing building, a traditional structure made of brick, was in need of a facelift and extension, but most of all, it needed to convey the Mutti family's way of living and values, particularly its strong connection to nature and the Italian countryside – as the company is rooted in farming and its location. 

Italian house that brings nature inside

interior with tree in the centre at Greenary by Carlo Ratti

(Image credit: Delfino Sisto Legnani and Alessandro Saletta)

‘It is a home for people, plants and animals,' says Francesco Mutti, who lives at the property with his wife and several pets, including a cat and a donkey. ‘There are crickets sounding everywhere. I always lived in the countryside and love nature.' The rural location is not the only thing that made this site the perfect home for him. ‘It's right next to the factory, and I like that there are parallels between home and work, one feeds the other, there is an equilibrium.' 

It's not your typical house setting, or brief. And homes, as such, are not a typical project for Ratti either. The studio is renowned for its forward-thinking, innovative and sustainable architecture that merges technology and nature. Yet it's perhaps more often seen applied to larger-scale work (recently, for example, designing the Italian Pavilion at Expo 2020 Dubai). ‘We love unusual projects,' says Ratti. ‘We do anything from small scale to the masterplan, but if it’s something interesting then it becomes very exciting. We are also passionate about blurring the boundaries between natural and artificial. Some of the crisis of the anthropocene is related to this separation between the two. We think architecture can play a big role in reconciling them. In the house, they converge.' 

hero exterior of Greenary by Carlo Ratti

(Image credit: Delfino Sisto Legnani and Alessandro Saletta)

Ratti, Rota and Mutti had several discussions and visits at the beginning of the project, and quickly arrived at the final solution: a house that is minimally expanded and largely renovated using innovative materials and techniques. Nature is at the heart of everything. The stairs, for example, are made out of local earth, while elsewhere the team used resin composed of natural material (using, among other things, tomato peel). And of course, there's the tree, a mature ficus that can be seen from outside through a large piece of glazing placed there to ensure there's enough sunlight for it to grow under the new, angular Corten steel roof. 

Having a tree in the house is a rich and calming experience, but requires a level of flexibility, Mutti points out. ‘You cannot change the humidity and temperature inside easily, for example,' he says. But the Italian house’s powerful simplicity invites you to adapt to nature, instead of expecting it to be the other way round. ‘It is a simple house, in the sense that it has simple lines, natural materials, and the greenery,' he continues. ‘The best part is the nature.'

staircase and greenery at Greenary by Carlo Ratti

(Image credit: Delfino Sisto Legnani and Alessandro Saletta)

Sitting on the slightly sunken ground level and living space around the tree, the eye levels with the ground outside and you feel as if placed in the surrounding field. On the upper levels, because of the tree and the internal open-plan layout and transparencies, it feels like living in a treehouse, among the foliage. 

The team worked with landscape architect Paolo Peirone, who brought valuable expertise to the team when it came to planting and the outdoors. Nature and architecture, old and new, coexist in this intruiging Italian house. ‘It’s a very special house,' says Rota. ‘It’s both about tradition and innovation, both simple and complex.'

The house is Mutti's ‘forever home’ and the only plan to possibly change it is when his daughter moves into the compound and some rearrangement might have to be made to accomodate her. But plans for the company campus next door are ongoing and Ratti and Rota are in the thick of design development. There are hopes for a park on site, as well as a more public-facing, foodie element (details to be defined) – further enriching the Mutti family's campus and the natural ecosystem around it.

heart of the house with the tree inside at Greenary by Carlo Ratti

(Image credit: Delfino Sisto Legnani and Alessandro Saletta)

Mr Mutti's house with the tree, called Greenary and designed by Carlo Ratti

(Image credit: Delfino Sisto Legnani and Alessandro Saletta)

side view of old and new at Greenary by Carlo Ratti

(Image credit: Delfino Sisto Legnani and Alessandro Saletta)

barn renovation in Italy into a house called Greenary by Carlo Ratti

(Image credit: Delfino Sisto Legnani and Alessandro Saletta)

Greenary house by Carlo Ratti

(Image credit: Delfino Sisto Legnani and Alessandro Saletta)



Ellie Stathaki is the Architecture & Environment Director at Wallpaper*. She trained as an architect at the Aristotle University of Thessaloniki in Greece and studied architectural history at the Bartlett in London. Now an established journalist, she has been a member of the Wallpaper* team since 2006, visiting buildings across the globe and interviewing leading architects such as Tadao Ando and Rem Koolhaas. Ellie has also taken part in judging panels, moderated events, curated shows and contributed in books, such as The Contemporary House (Thames & Hudson, 2018), Glenn Sestig Architecture Diary (2020) and House London (2022).