One World Trade Center is officially one of the world's greenest skyscrapers - Curbed NY

Despite prior setbacks, the 1,776-foot tower was able to achieve gold certification through its diverse range of sustainable features incorporated into its construction, design, and daily operation.

One World Trade Center - Wikipedia

One World Trade Center Is Now 1,776 Feet Tall (on Paper)

The World Trade Center Rising

Possible Design Revealed for 5 World Trade Center

3 World Trade Center

The One World Trade Center, or Freedom Tower, is the tallest building in the United States - LifeGate

Why 1 WTC Broke Promise To Be One Of The Greenest Skyscrapers In America - Gothamist

One World Trade Center officially awarded LEED Gold certification

World Trade Center skyscraper opens in NYC - Construction Specifier

One World Trade Center Freedom Tower - Curbed NY

Council on Tall Buildings Crowns 1 WTC Tallest Building in U.S.