The final piece of the spire that will sit on top of One World Trade Centre has been hoisted to the top of the building.
A couple expecting their first child were killed in as they travelled to the hospital, but doctors managed to save the unborn child.
Photographer Sergey Semenov has captured breathtaking panoramic pictures of New York by stitching together thousands of images of the city.
A tall, heavy spire was fully installed atop One World Trade Center on Friday, bringing the New York City structure to its symbolic height of 1,776 feet.
The installation makes One World Trade Center the tallest skyscraper in the US and third-tallest in the world, although building experts dispute whether the spire is actually an antenna.
The silver spire topping One World Trade Centre in New York was bolted into place today amid cheers from onlookers and construction workers 1,776 feet (541m) below.
The choice of height was symbolic as 1776 was the year the United States officially declared independence.
The spire has been installed on NYC's 1 World Trade Center. The building measures 1,776 feet, making it the tallest building in the Western Hemisphere.
New York police say that part of what appears to be a section of landing gear from one of the jets that were flown into the World Trade Center during the 9/11 terror attacks has been found.
The debris was discovered wedged between two New York City buildings.
An investigation is now under way to see if any human remains can be recovered.
New York Police Department (NYPD) confirmed that the five-foot-long part was discovered by building surveyors between two buildings on the site where a mosque and community center has been proposed three streets away from Ground Zero.
The part bears a "Boeing" stamp, followed by a series of numbers.
Police spokesman Paul Browne said the NYPD had secured the location and would treat it as a crime scene.
New York Mayor Michael Bloomberg has said that 1,000 NYPD officers have been assigned to counter-terrorism duties in the wake of the Boston explosions. A statement from his office said:
– michael bloomberg, New York Mayor
I have spoken with Police Commissioner Ray Kelly, and the NYPD has stepped up security at strategic locations and critical infrastructure, including our subways.
Some of the security steps we are taking may be noticeable, including deployment of Critical Response Vehicles and additional police personnel, and others will not be.
We have 1,000 members of the NYPD assigned to counter-terrorism duties, and they - along with the entire NYPD and the investments we have made in counter-terrorism infrastructure - are being fully mobilized to protect our city.
The heir to the Estee Lauder cosmetics empire has donated more than $1 billion (£650 million) worth of Cubist art to the Metropolitan Museum of Art in New York.
Leonard A. Lauder's collection comprises 78 signature paintings, drawings and sculptures from an art movement, figure-headed by Pablo Picasso and George Braque, which is regarded as the 20th century's most influential.
The Met hailed the 80-year-old tycoon's gift of 33 Picassos and 17 Braques, along with 14 works by Fernand Leger and 14 works by Juan Gris, as "truly transformational" for the gallery.
New York City Mayor Michael Bloomberg has taken part in his last St. Patrick's Day parade as mayor of the city:
St Patrick's Day festivities have begun in New York City as the parade made their way up Fifth Avenue. Both the New York Fire Department and NYPD joined in on the annual event.