The Spheres

The Spheres in Seattle is the first of its kind building in the world.  As a LEED Gold certified building, it has live rainforest inside and is built with our most advanced cement solutions, with 80% less CO₂ compared to the market standard.

The Spheres were developed to be the most unique workspace in the northwest of the USA and preserve the employees’ innate connection to nature. With an area of more than 6,200 square meters, the three spheres occupy only a small part of the major office complex headquarters, but they are the focal point of the project, which was on track for LEED Gold certification.

At Amrize, we offer the most advanced building solutions from foundation to rooftop. With our innovative cement solutions, we enable sustainable construction and create more liveable cities. Our green cements start with a 30% lower footprint and can go all the way to 95% carbon reduction and are fully aligned with the highest levels of sustainable building certifications. Amrize worked closely with the client Stoneway Concrete to produce an advanced cement solution to help the Spheres achieve its goal of being a LEED Gold certified project.

Thanks to our most advanced cement solutions, the project delivered more than 80% CO₂ reduction over the industry average, saving up to 400 tons of CO₂ and getting a LEED Gold certification. The Spheres span over three blocks in the center of the city. The intersecting spherical domes range from 24 to 29 meters in height, each taking up half of a city block. This greenhouse-like environment has been conceived to provide an inspirational space where occupants can live and work while surrounded by 40,000 plants from the cloud forests of 30 countries.