Finishing touches are made inside the Amazon Spheres in downtown Seattle on Tuesday, January 23, 2018. The giant orbs open on Monday.

Finishing touches are made inside the Amazon Spheres in downtown Seattle on Tuesday, January 23, 2018. The giant orbs open on Monday.

Photographer: Mike Kane/Bloomberg

Inside Amazon’s Giant Spheres, Where Workers Chill in a Mini Rainforest

Management will make sure no one hogs the tree fort.

Three years ago, Amazon.com Inc.'s horticulturalist was giving Jeff Bezos a preview of what the company's three plant-filled spheres—the centerpiece of its $4 billion downtown Seattle office project—would look like on opening day.

One rendering showed the view from a 30-foot-high suspension bridge looking down on a tree. The next showed the same tree as it would look five years later, branches stretching high above the bridge to form a canopy, giving Amazonians the feeling of walking through a rainforest.