Day 1, also known as Amazon Tower II and Rufus 2.0 Block 19,[7] is a 521-foot-tall (159 m) office building in the Denny Triangle neighborhood of Seattle, Washington, located at the intersection of Lenora Street and 7th Avenue.

[11][15] The block also features three intersecting 80-to-90-foot-tall (24 to 27 m) glass-and-steel spheres facing Lenora Street that will house five stories of additional work space for 1,800 employees and retail, totaling 65,000 square feet (6,000 m2).

The architects behind the organic design of the domes relied on the idea that better productivity can be initiated by introducing more sunlight and plants into the work space according to recent research.

[19] When revealed in 2013, the planned design for the spheres, separated from the building by a lawn and dog park,[20] was generally met with support and earned the project international press coverage.

[21][22][23] One of the few critics included Seattle city design review board member Mathew Albores, who compared its pedestrian hostility to the EMP Museum, offering no rain protection and little retail.