World’s Largest Green Roof
Architect Rafael Viñoly along with landscape architects OLIN has designed a project that features a 30 acre green roof top. ‘The Hills of Vallco’ will serve as a community park and a natural hotspot in Cupertino, California. When built, this will be the world’s largest green roof and Cupertino’s largest community park. This $3 billion project will replace the existing Vallco shopping mall in Silicon Valley which has been failing to attract public for quite some time now.
© The Hills at Vallco
The green rooftop will have a network of 3.8 miles of walking and jogging trail along with playgrounds, organic gardens, orchards, recreational spaces and amphitheater. Native plants on the roof are intended to attract wildlife. The building below will house upto 800 apartments and 185,000 square metres of office space, a new shopping centre , a cinema, bowling lanes, an ice rink and gym.
© The Hills at Vallco
The Hills at Vallco will achieve platinum certification from LEED for growing native plants, reducing energy consumption, recapturing rain water, providing natural light and ventilation, reducing pollution levels and increasing heat insulation in the building.
© The Hills at Vallco
By: Surabhi Bhatt
Madeline Brooks is a Projects Editor at Arch2O, where she has been shaping and refining architectural content since March 2024. With over a decade of experience in editorial work, she has curated, revised, and published an array of projects covering architecture, urbanism, and public space design. A graduate of the Harvard University Graduate School of Design, Madeline brings a strong academic foundation and a discerning editorial eye to each piece she oversees. Since joining Arch2O, she has played a pivotal role in shaping the platform’s editorial direction, with a focus on sustainability, social relevance, and cutting-edge design. Madeline excels at translating complex architectural ideas into clear, engaging stories that resonate with both industry professionals and general readers. She works closely with architects, designers, and global contributors to ensure every project is presented with clarity, depth, and compelling visual narrative. Her editorial leadership continues to elevate Arch2O’s role in global architectural dialogue.