One Prudential Plaza (formerly known as the Prudential Building) is a 41-story structure in Chicago completed in 1955 as the headquarters for Prudential's Mid-America company. At the time, the skyscraper was significant as the first new downtown skyscraper built in Chicago in 21 years (the last such building was the Field Building, now headquarters of LaSalle Bank, completed in 1934). It was the last building ever connected to the Chicago Tunnel Company's tunnel network.
When the Prudential was finished it had the highest roof in Chicago with only the statue of Ceres on the Chicago Board of Trade higher. Its mast served as a broadcasting antenna for Chicago's WGN-TV.
The architect was Naess & Murphy, a precursor to C.F. Murphy & Associates and later Murphy/Jahn Architects.
One Prudential Plaza, along with its sister property, Two Prudential Plaza, was sold in May 2006 for $470 million to BentleyForbes, a Los Angeles-based real estate investment firm, run by C. Frederick Wehba and his family.
After a default on the mortgage encumbering the towers during the recession, New York-based investors 601W Companies and Berkley Properties, represented by New York law firm Olshan Frome Wolosky LLP took control of the towers after investing more than $100 million in equity to recapitalize. BentleyForbes, the prior controlling owner of the towers, continues to have an interest in the owning partnership.