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.

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

New Two World Trade Center renders reveal a mirrored revamp

One World Trade Center Freedom Tower - Curbed NY

One World Trade, Tag

Dine Near the Top of One World Trade Center When the Observatory Opens May 29 - Eater NY

One World Trade Center Freedom Tower - Curbed NY

One World Trade Center - Wikipedia

One World Trade Center Facts and Information – The Tower Info

The New 80 Story WTC Building Officially Opens This Monday - Secret NYC

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