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

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

25 Feet Above Street Level, World Trade Center's Liberty Park Opens Today

One World Trade Center

One World Trade Center Facts and Information – The Tower Info

One World Trade, Tag

One World Trade Center officially awarded LEED Gold certification

One World Trade Center Freedom Tower - Curbed NY

Declared the tallest building in the U.S. — One World Trade Center is on track for LEED

One World Trade Center 'a bold but flawed giant

Ground Zero - Then and Now

One World Trade Center Freedom Tower - Curbed NY