Amazon announced the opening of Spheres, the company’s newest Seattle HQ buildings that are home to more than 40,000 plants from around the world.

The Spheres feature treehouse meeting rooms, river and waterfall features, paludariums, a four-story living wall, and epiphytic trees, says Amazon. They are home to more than 400 species spanning five continents and 50 countries. Many of the plants are from cloud forest ecosystems, where plants thrive on mountainsides at an altitude ranging from 3,000 to 10,000 feet.

The Spheres also include a visitor center – called the Understory – that is open to the public year round.

[Image courtesy: Amazon]