New York City's new Freedom Tower, also known as the One World Trade Centre, is already rising above the Manhattan skyline - and it has 20 more storeys to go.
The structure is currently 90 storeys high, and will stand at 1,776ft tall when it is finished in 2013, according to the Daily Mail.
It is being built on the former site of the Twin Towers, which were the target of America's worst ever terrorist attack, in which almost 3,000 people lost their lives when the buildings were reduced to rubble.
The building is the work of the Lower Manhattan Development Corporation, and is said to be a "beacon of freedom, and demonstrating the resolve of the United States, and the people of New York City".
There is also a National September 11 Memorial, which is located elsewhere on a 16-acre site, where tourists and members of the public can visit to pay their respects to those who lost their lives.
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