Uruguayan architect Rafael Viñoly has designed a 12ha "community park and nature preserve" for the roof of a redeveloped shopping centre in California.
The installation will have 6km network of walking trails that wind around orchards, vineyards, playgrounds and an amphitheater.
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The green roof, which would be the world’s largest, is part of a $3bn plan by Sand Hill Property to turn the mall into a mixed-use development complete with 2 million square metres of office space, 800 apartments, and mall with cinema, ice rink and gym.
Reed Moulds, Sand Hill’s managing director, told Mercury News: "There will be nothing like it when we are done. We believe its community focus will make this a remarkable place to live, work, dine, play, learn and recreate."
![](https://www.globalconstructionreview.com/wp-content/uploads/2021/08/roof3.jpg)
The property to be redeveloped is the Vallco Shopping Mall is in Cupertino, a southern suburb of San Jose on San Francisco bay. Development plans will be submitted to the city authorities shortly.
Sand Hill will contribute $40m to the local community, and a further $20m if the project is approved.
Viñoly will work with OLIN Landscape Architects on the project.
![](https://www.globalconstructionreview.com/wp-content/uploads/2021/08/roof4.jpg)
London’s "Walkie Talkie", a Viñoly-designed tower in the City of London, was crowned winner of the 2015 Carbuncle Cup, a prize awarded to "the ugliest building in the UK completed in the past 12 months".
Images via The Hills at Vallco