Designed by NBBJ and landscape firm Site Workshop, its three glass domes are covered in pentagonal hexecontahedron panels and serve as an employee lounge and workspace.

[1] The complex, nicknamed "Bezos' balls" by the media, has become a recognizable landmark and tourist attraction for the Denny Triangle area since the beginning of its construction.

[13] An Amorphophallus titanum corpse flower named "Morticia" bloomed for 48 hours in October 2018, attracting 5,000 visitors to the Spheres as Amazon opened the facility to public viewing for a limited time.

While hailed as a bold design, it was criticized for the lack of rain protection, public access, and the amount of energy needed to climatize the facility.

[18][19][20] In August, NBBJ released an updated design that replaced the supporting steel structures under the glass with organic forms called "Catalan spheres".

[28] The spheres were dedicated on January 29, 2018, by Jeff Bezos, Mayor Jenny Durkan, County Executive Dow Constantine, and Governor Jay Inslee.

[2] Public access is provided as part of weekly guided tours of the Amazon headquarters campus and a twice-monthly weekend reservation program.