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Two Union Square

601 Union Street
Seattle WA United States

Construction Dates
Floor Count56
Basement Floors4
Building Uses
 - office
 - mechanical
 - restaurant
 - retail
Structural Types
 - highrise
 - flag
 - pole
Architectural Style
 - postmodern
 - glass
 - steel
 - concrete

 Heights ValueSource / Comments 
Spire797 ft
Top of flagpole and decorative/mechanical use fins
Roof740 ft
main roof, 56th floor

Architect: NBBJ Group
Owner: Union Square LLC.

- One of Seattle's most prominent buildings. Two Union Square is consitered the city's most handsome building by the citizens of Seattle. It is also known as the Zippo Building by locals.

- Two Union Square is the world's first building to use 19,000 lbs/in.² of concrete.

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Drawing by Kelvin Fields
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Aerial View / Map - Location within Seattle

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