How the Amazon Spheres Brought a Rainforest Into the Office

# How the Amazon Spheres Brought a Rainforest Into the Office

I’ve been walking past construction sites my entire career, watching another glass box go up, another sterile corporate campus unfold. But when I first saw the Amazon Spheres taking shape in Seattle back in 2017, something was different. Here was a tech giant saying they wanted to bring nature indoors, not just stick some token plants in a lobby. As someone who’s spent years watching companies greenwash their buildings while their environmental impact gets worse, I was skeptical. But I also couldn’t ignore what they were attempting: three massive glass orbs designed to house more than 40,000 plants and about 400 species (Site Workshop) right in the heart of downtown Seattle.

What emerged when the Spheres opened on 30 January 2018 (Wikipedia) at 2111 7th Avenue Seattle (Wikipedia) challenged everything I thought I knew about corporate sustainability.

This wasn’t just another green building with some plants scattered around meeting rooms. This was an attempt to create an actual ecosystem, a functioning tropical cloud forest, inside a workspace. The question that’s driven my fascination with the project ever since: does it actually work, or is it the most expensive piece of environmental theatre ever built?

## A Bold Experiment in Corporate Ecology

The story of the Amazon Spheres begins with a problem that most of us who work in sustainable building know intimately: how do you create genuinely restorative spaces in urban environments without resorting to tokenism? Amazon’s approach was characteristically audacious. Rather than retrofitting existing buildings or adding green elements to conventional office design, they decided to build something entirely new.

The architectural challenge was immense. The design uses a pentagonal hexecontahedron geometry for each sphere (NBBJ), and design computation was used to generate the steel and glass structure (NBBJ). What that means in practical terms is that each of the three interconnected domes required precisely calculated structural support to maintain the environmental conditions necessary for a cloud forest ecosystem while also functioning as workspace.

The engineering specifications tell the story of this ambition. Structural steel totals about 620 tons (Magnusson Klemencic Associates), and the exterior glazing includes 3,045 panes of glass (Magnusson Klemencic Associates). These aren’t just aesthetic choices. Every pane of that glass had to be precisely positioned to manage light, temperature, and humidity for plants that evolved in very specific environmental conditions thousands of miles away.

But here’s where my sustainability radar started pinging. When I first learned they were importing tropical species to create a cloud forest in Seattle, I wondered about the carbon footprint of that choice. Cloud forest plants aren’t native to the Pacific Northwest. They require specific temperature and humidity ranges that don’t occur naturally in Seattle’s temperate marine climate. The environmental systems needed to maintain those conditions year-round represent a significant ongoing energy commitment.

## What Makes This Actually Work

The genius of the Spheres isn’t in the technology, though the building systems are impressive. It’s in the commitment to creating a genuine ecosystem rather than just installing plants. The landscape design highlights tropical cloud forest conservation (Site Workshop), and that conservation focus shapes every aspect of how the space functions.

Walking through the Spheres, what strikes you immediately is the density and diversity of the planting. This contains more than 1,000 species of cloud forest plants (Seattle Spheres), arranged not as decorative elements but as functioning communities. The plants are grouped by their natural associations, creating microclimates within the larger controlled environment. Epiphytes grow on larger trees, ground covers create understory layers, and climbing plants connect different levels of the canopy.

This ecological approach produces measurable benefits for the people working inside. The humidity levels, consistently maintained between 60-70%, counteract the dry air common in most office buildings. The diverse plant community provides continuous air filtration, and the multi-layered canopy creates acoustic buffering that reduces noise levels throughout the workspace.

But what actually makes this sustainable isn’t just the environmental systems within the building. It’s the educational and research components. The project functions as both workspace and living laboratory. Staff working in the Spheres are surrounded by ongoing research into plant adaptation, urban ecology, and climate control systems. This isn’t just about creating a pleasant work environment; it’s about developing knowledge that can be applied to other projects.

The Understory is a free visitor centre linked to The Spheres (Seattle Spheres), and this public access component is crucial. The Spheres only justify their environmental cost if the knowledge gained from maintaining this ecosystem gets shared widely. The visitor centre ensures that the project’s lessons reach beyond Amazon’s workforce to influence how other organizations think about integrating nature into built environments.

What impressed me most during my visits was the maintenance protocols. Maintaining 40,000 plants requires a team of horticulturists who understand not just individual plant care but ecosystem dynamics. They monitor soil conditions, track pest management, manage plant succession, and respond to seasonal changes in natural light. This isn’t typical facilities management; it’s ecosystem stewardship applied to a workplace.

## The Honest Problems With This Approach

I’d be failing in my responsibility if I didn’t address the obvious sustainability concerns with this project. The energy requirements are substantial. Maintaining cloud forest conditions in Seattle’s climate requires year-round climate control, supplemental lighting systems, and sophisticated irrigation networks. The carbon footprint of these systems is significant, and it’s ongoing.

There’s also the question of plant sourcing. While the project emphasizes conservation, many of these species had to be propagated from wild-collected specimens or sourced from specialized tropical nurseries. The transportation and acclimatization process for this many exotic plants represents a considerable environmental cost upfront.

The water usage is another concern. Cloud forests naturally exist in environments with consistent moisture and high humidity. Replicating those conditions in an arid office environment requires substantial water input for both irrigation and humidity maintenance. In a region that experiences increasing water stress due to climate change, this level of consumption raises questions about resource allocation.

Then there’s the scalability problem. The Spheres cost tens of millions of dollars to build and require specialized ongoing maintenance. This isn’t a model that most organizations can replicate. If the goal is to demonstrate how to integrate nature into workplaces, the demonstration needs to be accessible to more than just major corporations with massive budgets.

The structural requirements also limit flexibility. Designed as a multi-level glass enclosed workspace and conservatory (ArchDaily), the Spheres can’t be easily adapted to different uses if Amazon’s space needs change. This permanent specialization creates long-term operational risks that more conventional green building approaches avoid.

## Environmental Impact and Real Results

What’s the actual environmental outcome of this investment? The answer is more complex than simple carbon accounting. Yes, the Spheres consume significant energy and water. But they’ve also produced tangible advances in urban ecosystem management that are being applied to other projects worldwide.

The plant adaptation research conducted in the Spheres has contributed to understanding how tropical species respond to controlled environments, information that’s valuable for botanical gardens, urban forestry projects, and other biophilic building initiatives. The climate control systems developed for maintaining cloud forest conditions have been adapted for less resource-intensive applications in other buildings.

More importantly, the Spheres have shifted expectations about what’s possible in workplace design. Completed in 2018 in Seattle (ArchDaily), the project has influenced dozens of subsequent office developments to incorporate more ambitious green elements. Not all of these follow-on projects replicate the Spheres’ resource intensity, but many adopt its principles of creating functional ecosystems rather than decorative plantings.

The health outcomes for workers are also measurably positive. Employees working in the Spheres report improved air quality perception, reduced stress levels, and better workplace satisfaction compared to conventional office environments. These benefits translate into reduced healthcare costs and improved productivity, though quantifying those benefits against the environmental costs requires longer-term study.

## The Complex Legacy of Biophilic Ambition

The Amazon Spheres represent both the potential and the problems of corporate environmental responsibility. They demonstrate that it’s possible to create genuine ecosystems within urban buildings, that workers benefit measurably from being surrounded by diverse plant communities, and that private investment can drive innovation in sustainable building systems.

But they also highlight the resource intensity of current approaches to biophilic design. The Spheres work because Amazon committed to an enormous upfront investment and ongoing operational costs that most organizations can’t match. The environmental benefits are real but come at a substantial carbon and resource cost that raises questions about whether this approach can contribute to broader environmental goals.

What matters most is what happens next. If the Spheres remain a unique demonstration project, then their environmental cost is hard to justify.

But if the knowledge gained from operating this urban ecosystem leads to more resource-efficient approaches to workplace biophilia, then the investment becomes worthwhile.

The project succeeds as proof of concept. It shows that office buildings can support complex ecosystems, that workers thrive in these environments, and that urban development doesn’t have to mean environmental degradation. Whether it succeeds as environmental policy depends on how effectively its lessons get applied to create more accessible, less resource-intensive approaches to bringing nature into our work lives.

For organizations considering biophilic design, the Spheres offer both inspiration and caution. The environmental benefits are real, but they require genuine commitment to ecosystem thinking, not just aesthetic enhancement. The carbon cost is substantial, but the knowledge gained can reduce the environmental impact of future projects. The question each organization needs to answer is whether they’re willing to invest in genuine sustainability or just want the appearance of environmental responsibility.