The Exchange Buildingis a 22-story (275 ft) Art Decooffice building located in the central business district of Seattle, Washington. It was designed by John Graham & Associatesand completed in 1930. John Graham, an English-born Architect, also designed many other landmark Seattle buildings, including the downtown Frederick & Nelson(now Nordstrom), the downtown Bon Marché(now a Macy's), and the Dexter Horton Building.At the time of its completion, the Exchange Building was the second-tallest reinforced concrete skyscraper in the United States.In addition to many of Seattle’s commodity market exchanges, early tenants included General Electric, Standard Oil, Edison Lamp Works, and Underwriters Laboratories. Later tenants included Pacific Northwest Belland King County Metro(formally Seattle Metro). As of 2011 major tenants include the King CountyDepartment of Transportation, Razorfish(a unit of the Publicis Groupe), Slalom Consulting, and Nuance Communications.