NEW YORK CITY-The first tower building at the World Trade Center, 4 World Trade Center, will open tomorrow as a sign of lower Manhattan's renewal from the devastation of 9-11.

The 2.3-million-square-foot tower building is only 60% leased to two government agencies that committed to the property seven years ago.

“We feel a real sense of accomplishment for having made it to this place,” said Janno Lieber, president of the affiliate of Silverstein Properties that built the 72-story 4 World Trade Center. He adds the opening tomorrow signifies that the building is “really becoming part of New York again.”

The debut of 4World Trade Center and the completion in January of the Durst Organization's 1 World Trade Center will add 2.4 million square feet of unleased space to the market, according to Bloomberg News.

“This is the thin end of the wedge of a large supply of class A space that will be accumulating in the Trade Center area,” Michael Cohen, tri-state regional president of brokerage Colliers International, said of 4 World Trade Center. “At the end of the day, supply and demand will determine what that space trades for. You have three of the city's most deep-pocketed and sophisticated landlords that will be going toe-to-toe. I look forward to observing the outcome.” See story at Bloomberg News.