The bronze-colored aluminum and glass structure was the first modern class-A office building in Seattle[12] and is the first skyscraper in the world to feature a Vierendeel space frame.
[16] Originally the headquarters of Seafirst Bank, it was sold fourteen years later to JMB Realty in 1983 for $123 million, a record for a Seattle building.
[8][18] The building was purchased by Seafo Inc., a company affiliated with the New York State Common Retirement Fund, in 1993.
[27][28] A major renovation of the tower's lobby and amenity spaces was announced in July 2023 and is scheduled to be completed by 2024.
A longue, fitness center, and conference rooms are set to be added as part of the project; a bicycle hub on 3rd Avenue will replace a retail space occupied by Mel's Market until 2020.