WNYC

1 World Trade Center (inside) January 24, 2011

Frigid temperatures settled over the city but work at One World Trade Center steamed on. Workers, stuffing hand warmers into their gloves and boots, said the frigid temperatures somewhat slowed down progress but more than 52 floors have been completed and steel is up to the 56th floor.

1 World Trade Center (inside) October 12, 2010

The Empire State and Chrysler Building can be seen from the 40th floor.

1 World Trade Center (inside) October 12, 2010

By mid-October the beams of One World Trade Center have reached the 42nd floor. The workers are getting as much work done as possible before the winter comes with the biting winds that make progress at that height very difficult.

1 World Trade Center (inside) October 12, 2010

Workers are up to the 42nd floor.

1 World Trade Center (inside) >October 12, 2010

Workers are up to the 42nd floor.

1 World Trade Center (inside) June 13, 2011

On this week in June, following a sweltering week, One World Trade Center has poured concrete floors up to the 62nd floor.

1 World Trade Center (inside) June 13, 2011

On this week in June, following a sweltering week, One World Trade Center has poured concrete floors up to the 62nd floor.

1 World Trade Center (inside) June 13, 2011

On this week in June, following a sweltering week, One World Trade Center has poured concrete floors up to the 62nd floor, and workers are installing the names at the Memorial Pool as well as a heating and cooling unit under the bronze name plaques.

1 World Trade Center (inside) June 13, 2011

On this week in June, following a sweltering week, One World Trade Center has poured concrete floors up to the 62nd floor, and workers are installing the names at the Memorial Pool as well as a heating and cooling unit under the bronze name plaques.

1 World Trade Center (inside) June 15, 2011

On this week in June, following a sweltering week, One World Trade Center has poured concrete floors up to the 62nd floor.