375 Hudson Street, originally known as the Saatchi & Saatchi building, was completed in 1987, designed in a collaborative effort between Emery Roth & Sons, Lee Harris Pomeroy Associates, and Skidmore, Owings and Merrill. The 18-story building is over 1.2 million square feet and features rotating lobby art exhibitions. In 2010, after a top-to-bottom “green” retro-fit, the building became the first existing office building in New York City to achieve LEED Gold certification for sustainability and energy efficiency. 375 Hudson Street is the downtown headquarters of media conglomerate Publicis.