A new $50 million elevated public park opened by the World Trade Center site, a patch of green that in some ways is like a mini-version of the High Line. Our Michael Scotto has the details.

With a modest ceremony, the newest addition to the World Trade Center site opened to the public.

A one-acre greenspace, called Liberty Park, 25 feet above the street, atop a new vehicle security-screening center at Liberty and Greenwich Streets.

"I think it's magical," said one park visitor.

Magical, because the new site contains a hidden oasis of benches, trees and plants.

The landscape architects who designed the park sought to shield much of the building it sits on from the public - using a vertical planting system to disguise one of the concrete walls.

With its views of One World Trade Center and the memorial, the park is also envisioned as a place to reflect on the September 11 attacks. 

We saw people taking photos of the new towers and pausing to think about what happened nearly fifteen years ago.

"You get a view of the whole district, with all of the architecture, all of the projects, all of the towers," said architect Joseph Brown.

Adjacent to the park, workers are rebuilding a Greek-orthodox shrine destroyed on 9/11.

At the other end of the park, there's a statue which depicts the early days of the war in Afghanistan.

There are plans to add another reminder of 9/11: the sphere that once rested in the plaza outside the twin towers. Damaged during the attacks, it now sits in Battery Park.

The sphere belongs here, not in Battery Park, and certainly not in an airport hangar.  

The elevated park, reminiscent of the High Line in Chelsea, connects to a pedestrian bridge and Battery Park City.

For people who work in the area, it is likely to become a place to relax and recharge.

"I just think it's a wonderful place to embrace life, you know, I mean you can't get away from the past but it's a beautiful place to be surrounded by greenery and life," said one visitor.

Life that symbolizes the rebirth of Lower Manhattan.