Construction workers watch as the final sections of the spire are lifted. (Credit: Getty) Construction workers watch as the final sections of the spire are lifted. (Credit: Getty)

 

The final piece of the World Trade Center's spire was added this morning, which will help it become the tallest building in the Western Hemisphere.

 

When completely installed, the building will reach its height of 1,776 feet.

 

The 758-ton spire was covered in an American flag, according to the Associated Press.

 

The spire was supposed to be added earlier this week but was delayed by wind.