Last year the 9/11 Memorial was opened on the tenth anniversary of the terrorist attacks on New York City. And last weekend the new One World Trade Center officially became the tallest building in New York City, eventhough it is still under construction.
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 1A crane lifts a second iron column into place on the 100th story of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 2The Empire State Building is seen behind an iron worker as he stands next to protective netting on the 100th story of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 3Iron workers walk around the steel decking on the 100th story of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 4An iron worker sits to eat on a partially finished floor near the top of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 5Iron worker Steven Cross carries steel cable across the 100th story of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 6A view shows the One World Trade Center in New York. ANDREW BURTON/REUTERS
 7A view shows the One World Trade Center in New York. ANDREW BURTON/REUTERS
 8A couple, posing for their pre-wedding photographs, are back-dropped by the One World Trade Center and Manhattan skyline as seen from New Jersey. EDUARDO MUNOZ/REUTERS
 9A construction worker sweeps the 71st floor of One World Trade Center in New York. ANDREW BURTON/REUTERS
 10One World Trade Center is seen from Battery Park in New York. ANDREW BURTON/REUTERS
 11One World Trade Center is seen from Battery Park in New York. ANDREW BURTON/REUTERS
 12Iron workers put their tools back into storage bins on the 100th story of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 13Iron worker Steven Cross steadies an iron beam on the 100th story of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 14The Empire State Building and lower Manhattan is seen from the 90th story of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 15Iron workers Steven Cross (L) and Adam Cross prepare steel cables to lift iron beams on the 100th story of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 16Iron worker climbs a column to help manoeuvre a beam on the 100th story of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 17An iron worker walks on a walkway that hangs on the outside of the 100th story of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 18Iron workers talk with each other as they wait for a column to be placed on the 100th story of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 19An iron worker pulls tubing onto his shoulder as he works on the 100th story of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 20An iron worker looks down from a partially finished floor near the top of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 21An iron worker rubs his eyes as he sits for a rest on a partially finished floor near the top of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 22An iron worker sits to rest on a partially finished floor near the top of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 23Iron workers gather to rest on a partially finished floor near the top of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 24Iron workers Billy Geoghan and Jim Brady place an iron beam on the 100th story of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 25The 9/11 Memorial can be seen from the 90th story of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 26Attendees of the 9/11 Memorial are seen from the 90th story of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 27The Empire State Building and lower Manhattan is seen from the 90th story of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 28The Brooklyn Bridge and Manhattan Bridge is seen from the 90th story of One World Trade Center in New York. LUCAS JACKSON/REUTERS
 29One World Trade Center is seen from Battery Park in New York. ANDREW BURTON/REUTERS |