On the 12th anniversary of 9/11 NOVA updates its Emmy-nominated "Engineering Ground Zero" program, and brings viewers inside the construction of the National September 11 Memorial and Museum, to view the new tower's final floors and the installation of the 800-ton spire and beacon.
The program, airing on KSPS TV Spokane at 8p.m. on Sept. 11, revisits the completion of the 104 story skyscraper in New York, just 1,776 feet from the site where the Twin Towers once stood.
NOVA goes underground to showcase the Memorial and Museum where a thousand artifacts from that horrendous day in 2001, will be on display to the public.
The museum leads visitors on a tour from events leading up to the 9/11 attacks to today's current events.
The first relics they will see are two massive pieces of structural steel, rusty red columns that soar 70-feet tall into a sunlit glass atrium that encloses the museum entrance. These "tridents," which formed the base of the original World Trade Center, are still reddish brown from the fires that burned for 99 days after the attack.
Next, down a long ramp, visitors will see the last piece of steel removed from ground zero in 2002, which sits inside a gaping silvery chamber that drops to the lowest level of the museum.
Along the way is a battered staircase called the "survivor's stairs" that led hundreds of people to safety and survival. Visitors will walk beside the stairs, a concrete stairwell that provided a means of escape for hundreds fleeing from the burning towers.
The "flag steel" shaped ribbon that resembled a flag blowing in the breeze that became known as the WTC cross, a piece that became a symbols of hope to hundreds of recovery workers are among the relics that are being seen by the public for the first time since the early days after the attack.
Designers were faced with the challenge of creating a space intended for remembrance and education while also being cognizant of building on sacred ground.
The Museum is scheduled to open in the Spring of 2014.