By Josh Marks | Inhabitat

The historic PacMutual campus in dowtown Los Angeles recently became the oldest building in Southern California to achieve LEED Platinum certification from the U.S. Green Building Council (USGBC). Now, Rising Realty Partners has revealed that its landmark property built in 1908 with additions in 1921 and 1926 will soon feature the tallest green wall in the City of Angels. At a height of 80 feet, the LiveWall will overlook Pershing Square with a pocket park as well as a restaurant and cafe situated at its base. L.A.-based firms Johnson Fain and Melendrez teamed up on the design of both the green wall and pocket park that are expected to be completed in July 2014.

“Rising Realty Partners is committed to the greening of our city, whether it is a sustainable building or the introduction of a vertical park,” said Christopher Rising, RRP President and Chief Operating Officer. “We hope this project will aide in the further transformation of Downtown Los Angeles.”

The LEED Platinum certification under the Existing Buildings rating system was earned with sustainability initiatives such as offsetting 100 percent of the building’s energy use through purchasingrenewable energy credits, reducing indoor water use to 32 percent below the national baseline and encouraging public transit use with 63 percent of tenants arriving at work using an alternative form of transportation.

The 460,000 square foot PacMutual campus consists of three interconnected buildings — Clock Building (1908), Sentry Building (1921) and Carriage House (1926) that take up a city block at 523 W. Sixth Street. It was originally designed by architects John Parkinson and Edwin Bergstrom in the Beaux Arts style. The historic structure was designated as a historic-cultural monument in 1982 and was purchased by RRP in May 0f 2012 after which extensive renovations took place. Current tenants include fashion firm Nasty Gal and the Los Angeles Conservancy. Most recently, new visual effects firm Magnopus set up shop at PacMutual, signing a five year lease.

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The building has been a favorite location for Hollywood shoots. Angelina Jolie jumped from the building in “Mr. and Mrs. Smith” and Showtime’s “House of Lies” is lensed there. Other productions filmed at PacMutual include “Fight Club,” “Star Trek” and “Fun with Dick and Jane.” Famous former tenants include the law offices of Richard Nixon and the offices of Laurel and Hardy Inc.

“This thoughtful reinvestment in downtown Los Angeles shows great respect by Rising Realty Partners for the region’s precious natural and historic resources,” said Mark Huppert, Senior Director of thePreservation Green Lab at the National Trust for Historic Preservation based in Seattle, Washington. “In fact, Los Angeles seems to be leading the nation in breathing new life into old buildings. PacMutual’s tenants are joining a growing wave of corporate citizens who are the driving force behind this urban renaissance.”