COOPER: Well, nearly ten years since bin Laden's attacks here at ground zero. The work continues and it's a significant time for the rebuilding effort. Janno Lieber is president of world trade properties joins us right now. Where is the construction stand at this point?</s>JANNO LIEBER, PRESIDENT, WORLD TRADE CENTER PROPERTIES, LLC: Anderson, construction is going 100 miles an hour. Across the street from here, you can see the memorial which is going to open on the tenth anniversary of the attacks of 9/11 just a few months from now. As part of that, there is a museum will open in 2012. And then all around us there are many more buildings under construction. That is 25 stories up and is going to open up in 2013. One World Trade, a theme tower, is going to open in 2013. And, of course, directly to the right of that, Seven World Trade has been opened for five years and it's a great success.</s>COOPER: And then the foundations for two more structures are being built behind us.</s>LIEBER: That's right. There are two more big skyscrapers under construction below grade, but you can't see it. But also a huge new train station that is going to be the center of that.</s>COOPER: You've heard the frustration of New Yorkers and people around the world saying ten years on, why isn't there something that people can come to and visit?</s>LIEBER: Well, actually, we've sometimes shared that frustration. We felt that New Yorkers wanted and deserved to have the World Trade Center rebuilt. But it's a very complicated site. Right behind us there's a subway that runs through the site that has maintained service even as all of the construction is taking place around it. All of the utilities had to be maintained.</s>COOPER: When do you think it will all be completed?
Construction Continues at World Trade Center Site