Amazon Founder Jeff Bezos opened the doors recently (of course by saying “Alexa, open The Spheres”) and Alexa did what she was told. The Governor was there and noted:
These unique buildings are so much more than a beautiful, creative space for Amazon employees. They will help conserve a number of rare plant species from around the world and provide countless educational opportunities for local students – and that's something Washington can take pride in.
Well, not quite, the public can visit the Understory, and your visit "does not include access to the main portion of The Spheres" but you can book here. No food and drinks, large bags, pets, and weapons.