1001 Fourth Avenue Plaza, Seattle-First National Bank Building
Structure in General
- Seattle's tallest building from 1969-1985.
- Once called "The box the Space Needle came in".
- Stands on a plaza atop a granite base.
- The structural system with each exterior curtainwall was designed as a vierendiel truss tying together the massive corner columns.
- Elevation of site above mean sea level: 38.4 meters.
- Overall height above mean sea level: 229.8 meters.
- On September 30, 1982, the Seafirst Building was sold to JMB Realty of Chicago for $123.37 million.
- Surpassed Elm Place as the tallest building west of the Mississippi River, and then surrendered the lofty title in the same year when 555 California Street was completed.
- On April 29, 2005, the building was sold by the New York State Common Retirement System and ING Clarion to Hines for a reported $162.8 million.
- Renamed 1001 4th Avenue Plaza in 1986.
- Winner of the AIA Honor Award 1970.
- First Vierendeel space frame supported building ever.
- Renamed Safeco Plaza in 2007.
- Height: 630 ft. from Third Ave., 609 ft. from Fourth Ave.
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1001-1025 Fourth Avenue
1001 Fourth Avenue