Crystals at CityCenter Achieves LEED(R) Gold Certification

Crystals is World's Largest LEED® Gold Certified Retail District

LAS VEGAS, Oct. 22 /PRNewswire-FirstCall/ -- Crystals, the retail and
entertainment district at CityCenter, has achieved LEED®+ Gold Core & Shell
certification from the U.S. Green Building Council (USGBC), making it the
world's largest retail district to receive this level of recognition. Opening
in December, CityCenter was created with a vision to introduce a new level of
environmental consciousness to the world-famous Strip and has emerged as a
leader in sustainable urban development. Crystals' achievement marks the
fourth LEED Gold certification for CityCenter; previous recipients included 1.
ARIA Resort's hotel tower, 2. ARIA's convention center and theater, and 3.
Vdara Hotel & Spa. CityCenter is poised to achieve a combination of LEED Gold
and Silver ratings throughout its remaining hotels, residences, dining and
public spaces.

Under the LEED for Core & Shell rating system, USGBC evaluated the entire
district with the exception of the tenants' interior spaces. This enables
tenants to capitalize on green strategies implemented throughout Crystals,
including energy and water efficiencies, enhanced indoor air quality,
sustainable building materials and an abundance of natural light.

"From CityCenter's inception, we aimed to create a vibrant destination to
demonstrate that a community can be both beautiful and sustainable for today
and for future generations," said Cindy Ortega, MGM MIRAGE's senior vice
president of Energy and Environmental Services. "As we celebrate Crystals'
achievement, along with the recent Gold certification of ARIA and Vdara, we're
a step closer to introducing this transformative development to Las Vegas, and
welcoming our guests to an environment designed with their health and
well-being in mind."

Crystals' sustainable highlights:
-- Radiant floor cooling will use less energy for air conditioning by
chilling the air specifically in occupied areas rather than cooling
the
entire space
-- The majority of all wood products used in Crystals are Forest
Stewardship Council (FSC) certified, meaning the wood is produced from
forests with sustainable management practices in place
-- Annually, Crystals will save an estimated 1.8 million gallons of water
within the building through efficient water fixtures. This equates to
a
savings of nearly 38 percent over existing building codes
-- Skylights will allow for abundant natural light to illuminate the
space
-- Guests arriving with alternative fuel vehicles will have access to
preferred parking

-- More information on CityCenter's green initiatives can be found at
http://www.prnewswire.com/mnr/mgm/39529/

S. Richard Fedrizzi, President, CEO and Founding Chair, USGBC, said, "From its
intense focus on water conservation to the multiple strategies for energy
efficiency, the CityCenter team has delivered several exceptional properties
that qualify for the LEED Gold rating. Extreme climates challenge the most
creative of project teams, and the CityCenter team has risen to the occasion
and then some. We congratulate them on their significant achievement."

Crystals' multi-faceted exterior was designed by Studio Daniel Libeskind*; the
brilliant glass canopy depicts the detailed beauty of a quartz crystal,
welcoming an abundance of natural light into the three-level experiential
environment. Crystals' interior was designed by David Rockwell and Rockwell
Group, creating a 21st century park that will celebrate nature and the
seasons, and feature "changeable artwork" such as abstract hanging gardens, a
lush flower carpet and more.

Large-format luxury retailers that will establish Crystals as a preeminent
international shopping destination include Louis Vuitton, Prada, TIFFANY &
CO., Ermenegildo Zegna, Roberto Cavalli, Christian Dior, Versace, Bulgari,
Cartier, Hermes, Bally, Van Cleef & Arpels, Mikimoto, Emilio Pucci and ILORI.
Unique-to-the-market retailers opening their first locations in Las Vegas
include Tom Ford, Carolina Herrera, Miu Miu, Paul Smith, Kiton, Marni,
Assouline, H. Stern, Tourbillon, Porsche Design and de Grisogono.

Visitors to Crystals also will enjoy Eva Longoria Parker's first Las Vegas
restaurant, BESO; two dynamic new dining concepts from internationally
renowned master chef Wolfgang Puck; an exciting new pub concept by Todd
English; and Mastro's Ocean Club.

CityCenter's LEED certification effort was lead by MGM MIRAGE's Energy and
Environmental Services division along with a recognized group of
sustainability consultants including CTG Energetics, Green Building Services,
Viridian Energy & Environmental, Fore Solutions and Simon & Associates.

About CityCenter
CityCenter is an unprecedented urban metropolis opening in December 2009 on 67
acres between Bellagio and Monte Carlo resorts on the Las Vegas Strip.
CityCenter is a joint venture between MGM MIRAGE (NYSE: MGM) and Infinity
World Development Corp, a subsidiary of Dubai World. CityCenter will feature
ARIA, a 61-story, 4,004-room gaming resort; luxury non-gaming hotels including
Las Vegas' first Mandarin Oriental and Vdara Hotel & Spa; Veer Towers, the
development's only strictly residential buildings; and Crystals, a
500,000-square-foot retail and entertainment district. Vdara, Mandarin
Oriental, Las Vegas and Veer Towers will include approximately 2,400
residences total. Additionally, The Harmon, a 400-room luxury boutique hotel,
is slated to open at CityCenter in late 2010. CityCenter also will feature a
resident Cirque du Soleil production celebrating the timeless musical legacy
of Elvis Presley; and an unparalleled Fine Art Collection with works by
acclaimed artists including Maya Lin, Jenny Holzer, Nancy Rubins, Claes
Oldenburg and Coosje van Bruggen, among others. CityCenter is a design
collaboration between MGM MIRAGE and eight internationally acclaimed
architectural firms including Pelli Clarke Pelli, Kohn Pedersen Fox, Helmut
Jahn, RV Architecture LLC led by Rafael Vinoly, Foster + Partners*, Studio
Daniel Libeskind*, Rockwell Group and Gensler. At the forefront of
sustainability, CityCenter will be one of the world's largest green
developments. ARIA and Vdara are the first Las Vegas hotels to achieve LEED®
Gold certification by the U.S. Green Building Council. CityCenter's remaining
venues are poised to receive a combination of LEED Silver and Gold ratings.
For more information about CityCenter, please visit www.citycenter.com.

+ The LEED® (Leadership in Energy and Environmental Design) Green Building
Rating System is the nationally accepted benchmark for the design,
construction, and operation of high-performance green buildings. The 'LEED
Certification Mark' is a registered trademark owned by the U.S. Green Building
Council and is used by permission.

* As a consultant to AAI Architects, Inc.

SOURCE MGM Mirage

Natalie Mounier of Kirvin Doak Communications; +1-702-737-3100,
nmounier@kirvindoak.com, for MGM Mirage