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-- history at the spot where the Twin Towers once stood.
The new one World Trade Center has now passed to the Empire State Building and it's become the tallest skyscraper in New York City.
That's the view from the new -- see the empire state there in the background.
And this is the moment it happened workers installing the steel column that made it official the developers say the building will be a powerful reminder that the terrorists did not.
You always knew you're getting close to New York -- Twin Towers.
An entire generation.
Will know they're getting close to new York and know the new York New Jersey have never stood taller.
And when they see this building well that building now stands officially 12171.
Feet that's what it says there on the beam.
Officials tell us that the iron workers who installed it and other people behind the project signed their names on that steel column.
And now a live look at the tower tonight workers are planning -- -- up in blue and white to celebrate today's milestone.
Earlier our correspondent Rick Leventhal got a chance to take out the view from the penthouse.
Kevin may have taken years longer than most thought it would or should with the New York City skyline as the new King of the Hill.
One world trade its towering above every other building here.
And bill -- with a Port Authority the agency in charge of rebuilding the site took us to the very top.
Stretching nearly a quarter mile into the sky the most impressive view -- New York City.
From the top of what is now Manhattan's tallest building.
Years of delays and false starts fade as one world trade rises nearing its peak.
Thanks in large part to some of the -- construction workers on the planet.
Iron workers bolting steel beams 100 stories -- these workers are out here they know what they're here.
And they are building this building safely but they're also building this building as fast as we can't because we know the world was -- It's designed to be the strongest office building in the history of the world the 200 foot concrete base has -- seven times thicker than a sidewalk.
The -- will contain 45000.
Tons of structural steel.
Hi there isn't room to store all the materials on site to their truck in around the clock -- skyward by pipes and cranes.
Eventually an express elevator will carry people -- the top.
But for now it's a bit of a challenge -- to elevators and up and a -- stands stairs built on the outside of the tower.
And three letters to of them thirty feet tall.
The highest floors are bare metal -- open to the wind sun and air ten to fifteen degrees cooler than ground level.
Soon in the being close as they surpassed -- historical icon for the second time.
When the Empire State Building.
Was built it was as -- the time of real economic challenge for New York for the country.
And the the nation face on a challenge to get it built this incredible bill.
And we're doing it again the -- 60% leased in the Port Authority says it will be filled by the time construction is finished late next year people are.
Rightfully gonna think about what's happening and they also think about the fact that we are -- and they didn't win.
-- -- 104 stories which is the best message the people who took down our Twin Towers and killed 3000 people is that they didn't win.
And there are financial incentives new tenants are reportedly signing leases substantially lower than comparable -- in midtown.
And abuse or better to kept.
Rick Leventhal has freedom rises.
Well a campaign.
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