In pics: One World Trade Center reopens

The silvery skyscraper that rose from the ashes of the September 11, 2001 terror attacks to become a symbol of American resilience has opened for business, as 175 employees of the magazine publishing giant Conde Nast settled into their first day of work there.

The silvery skyscraper that rose from the ashes of the September 11, 2001 terror attacks to become a symbol of American resilience has opened for business, as 175 employees of the magazine publishing giant Conde Nast settled into their first day of work there.

The opening of the country's tallest building on Monday, One World Trade Center, marked a symbolic return to a sense of normalcy for the site where the twin towers fell more than 13 years ago.