One World Trade Center is officially the tallest building in the U.S.

The 1,776-foot-tall skyscraper was deemed the most altitudinous in the Americas, and is expected to be the third tallest in the world upon completion

We're No. 1! We're No. 1! Today, the Council on Tall Buildings and Urban Habitat (yes, that's a thing) declared that One World Trade Center is the tallest building in the United States, beating out Willis Tower in Chicago, the former superlative holder. A point of contention was the building's 408-foot-tall spire; eventually, the Council determined that it was "an architecturally significant feature of the building," as opposed to an antenna. (And it props up the building's claim that it stands at 1,776 feet, rather than 1,368 feet.)

Now that its official height has been determined, the structure that Banksy recently slammed has also earned the ranking of the third tallest in the world. Watch a time-lapse video of the spire ascending here.

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Editor: Marley Lynch (@marleyasinbob)

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