These million-dollar luxury condos used to be the storied offices of a big Wall Street bank. See inside the transformation.

• Developer Macklowe Properties converted a Financial District office building into a condominium.
• The 1.25 million-square-foot tower is the largest office-to-residential conversion in New York City.
• The New York landmark was completely reconfigured inside, including removing 30 elevators.

An Art Deco office tower that's been an icon on the Lower Manhattan skyline since 1931 is getting a new life — as $1 million-plus condos.

Built as the headquarters of the Irving Trust Company in 1931, One Wall Street is now home to the largest office-to-residential conversion project in New York City history.