Amazon Spheres, Seattle

The Amazon Spheres in Seattle set a new standard for biophilic design, outperforming #8 Solar Settlement's residential scale with a workplace biome housing 40,000 plants from over 400 species. The three glass domes, completed in 2018, use 2,643 panes to harness natural light and employ a closed-loop water recycling system that reuses 100% of irrigation runoff. This thermal management and humidity control — comparable to a botanical conservatory — creates a stable tropical environment where employees work among canopy walkways and living walls. The spheres' energy performance is 30% better than the typical corporate headquarters, achieving LEED Platinum certification.