wall in front of the original curtain wall, which would then be removed. In 1996, Unilever proposed replacing the curtain wall with an identical wall designed by David Childs of SOM. Childs said at the time that only one percent of the glass remained. The LPC approved Childs's plan, but the proposal was not further acted upon at that time. Restoration and office tenancies RFR operation Unilever announced in September 1997 that it was moving its Lever Brothers division to Greenwich, Connecticut. Following the announcement, Lever Brothers slowly began vacating the building, leaving Unilever on only the top four floors. At the time, Lever Brothers had been the building's only tenant. Shortly before Korein's death in 1998, real estate magnates Aby Rosen and Michael Fuchs acquired the building lease, although Korein's family retained the land lease. Under the agreement, Rosen's company RFR Holding was obliged to perform a comprehensive restoration of the facade. RFR negotiated a lease-back deal allowing Unilever to remain on the top four floors. The Korein family remained the owner of the land. RFR hired graphic designer Michael Bierut to expand the building's typeface, which previously had only included the seven unique letters in the name "Lever House". In 1999, RFR Holding announced that it would spend $25 million on capital improvements, including a restoration of the building's curtain wall and public spaces, designed by SOM. The deteriorated steel subframe and rusted mullions and caps were replaced. New panes of vision glass were installed, which were nearly identical to the originals but met modern energy codes. The curtain wall was also relocated outward by on all sides. Work on the project began in 2000, at which point curtain wall specialist Gordon H. Smith estimated that the building only retained about a half-dozen of its original spandrel panels. The renovation project included the addition of marble benches, as well as a sculpture garden with works by Isamu Noguchi, to the building's plaza. Ken Smith Landscape Architect had proposed revising one of Noguchi's two unbuilt designs for a sculpture garden, but the Noguchi Foundation had rejected the proposals, leading Smith to redesign the garden using eight of Noguchi's sculptures. These elements had been part of the original plans for the building and were never realized. The work was completed by 2001. Following the renovation, Lever House became a standard office building with multiple tenants. Metal processor Alcoa (later Arconic)