It's called the Amazon Spheres - three total, with a height of 90ft each! This is a 70,000 square foot Amazonian rainforest, in the heart of cold, rainy Seattle. The surface of the spheres is made of up 2,643 panes of overlapping glass! The Spheres are the main attraction on the Amazon campus in South Lake Union and the whole thing cost $4 billion to build.
This wild space is a place where Amazon employees can come hang out, work, or just get back in touch with nature. It's a chance to unplug and refresh your mind. There are more than 40,000 different plants from 30 countries in the Spheres. Horticulturalist Ron Gagliardo who made the whole thing happen refers to it as "living art". You are not allowed to touch the plants because of the sensitive nature of the environment and unlike the rest of the Amazon campus, pets (except service dogs) are not allowed inside.
The largest feature in the Spheres is called the Living Wall. It is literally a 62 ft wall of plants that stretches up four stories! The wall itself is made up of 25,000 of the 40,000 plants represented in the Spheres. To enable the plants on the wall to thrive, each plant lives in a small fabric pocket so that they don't strangle each other's root systems or loose their grip on the wall! Another ginormous element in the Spheres is a 40 year old tree nicknamed "Rudi" that had to be lowered in from a temporary hole in the roof.
The public is welcome in the "understory" of the Amazonian rainforest accessible from 7th Ave, but the upper areas are only for Amazon employees. However, you can sign up for a formal tour of Amazon's entire HQ and visit other areas of the Spheres.
All told, there are 10 horticulturists in charge of keeping the plants in the Spheres "operational". Plants are kept offsite until they are mature enough to transplant into the Spheres and also are occasionally moves for pollination purposes. Many of the plants are labeled, but this is still a work in process.
For an in-depth tour through the Spheres with lots of photos, check out this Curbed article!