Under construction: A look inside the Sept. 11 museum

Under construction: A look inside the Sept. 11 museum

After delays that included a much-publicized funding dispute and flooding from Superstorm Sandy, construction has resumed on the National September 11 Memorial & Museum. A video gives viewers an inside look at what to expect so far.

The museum, located under the World Trade Center Memorial Plaza in lower Manhattan, tells the story of the terror attacks on September 11, 2001, and the February 26, 1993, World Trade Center bombing.

An exhibit will detail the events on 9/11, which led to the deaths of nearly 3,000 people at the World Trade Center, at the Pentagon in Washington, D.C., and on United Airlines Flight 93, which crashed near Shanksville, Pennsylvania, and was believed to be headed to the nation's Capitol.

The video visits some poignant artifacts that have already been installed: the pieces of intersecting steel that have become known as the "Ground Zero Cross," and the Vesey Street stair remnant, the so-called "Survivors' Staircase." On 9/11, hundreds escaped by fleeing down this stairway after two planes crashed into the Twin Towers.

The funding dispute between the memorial foundation and the Port Authority of New York & New Jersey, which owns the Trade Center site, delayed construction for over a year, starting in fall 2011.

This turned out to be a "silver lining," says Joseph Daniels, National September 11 Memorial & Museum president. "Because when Sandy occurred, most of the artifacts were not yet in place," he added.

The museum site was flooded with 22 million gallons of water, but the artifacts, most of which were still in storage, were spared.

The museum is scheduled to open in spring 2014.