The program awarded four Las Vegas resorts for their eco and social responsibility standards in the meeting and convention space.

Building boasts sustainable water, lighting, and material use

The group's project has planted over three million trees worldwide

Eco-friendly initiatives include an extensive recycling program, biodegradable food containers, and green cleaning products.

Resort boasts 15,000 square feet of sustainably designed space

The award is a first for Long Island, New York

The Light Award from the National Association of Real Estate Investment Trusts honored the company for reducing its portfolio-wide energy use.

The buy equals 100 percent of the hotel's estimated energy use for 2013

Hotel Verde is set to open in August 2013

Starwood's sustainable chain reinforces its "green from the ground up" branding.