Built in 1932, the Ralph Walker-designed AT&T Long Distance Building stood as an art deco masterpiece—but its status as a global communications hub was in danger of being consigned to history. Our design preserves the tower's architectural identity, while transforming it into a cutting-edge data center. Massive electrical, mechanical and communications infrastructures were carefully integrated without altering the building's façade. Ten cooling units and 14 emergency generators on the roof help power the churning technological processes at work within. We obtained approval from the Landmarks Preservation Commission to build two new radio towers, giving the building a crown and accentuating its existing swagger. Expansive 1930's murals were restored, opening up the lobby to the street, and engaging the city. Approximately a quarter of the building's windows have been replaced with louvers, which emulate the pattern of the original sash windows.