It’s tallAlexander Prokopenko/Shutterstock
With its 18-piece spire, One World Trade Center stands at 1,776 feet, a direct reference to the year the Declaration of Independence was signed. (Find out how Independence Day and other references are hidden in dollar bill symbols, too.) However, even at this soaring height, it’s controversial whether it’s the tallest building in the United States. In Chicago, where the Willis Tower holds the national record for tallest building at 1,451 feet, residents have joined the debate over how a skyscraper’s true height should be determined; subtracting the spire knocks 1WTC’s total height down to 1,368 feet.
World Trade Center One contains more than 40,000 metric tons of structural steel. As for the 9/11 Memorial and Museum, according to a tweet from its official account, the memorial contains “49,000 cubic yards of concrete, enough to pave more than 200 miles of NYC sidewalks.” To put that figure into perspective, 200 miles is the rough equivalent of 4,000 New York City blocks.