Another milestone in the rebuilding of Lower Manhattan after 9/11. The top of the new One World Trade Center opens to the general public on Friday. But on Thursday, some lucky visitors got a sneak preview. NY1's Roger Clark filed the following report.

The cloudy day and lack of magnificent view did not spoil David and Liza Louw's trip 100 stories above West Street.

"It's amazing. There's not a single detail they haven't thought about," said Liza Louw.

"It was spectacular. A very proud moment for New York City," said David Louw.

They were some of the 3,000 people who snagged free tickets online to the One World Observatory, located on floors 100 through 102 atop the new One World Trade Center.

When we were there, the foggy haze limited what would normally be an incredible view. However, visitors said the other experiences more than made up for it, including a three-dimensional time-lapse panorama of New York City that unfolds on three walls of the elevator cabs during the quick ride to the top.

"It was a little disappointing that we couldn't see anything but everything else was really nice," said one visitor.

"The elevator ride is incredible and they also have the iPods that you can see what you would of seen. It's very nice. It's worth it," said another.

And most everyone said a return visit was in order for another 47 second trip high above the city.

"We have to come back to see without the clouds around," said one sightseer.

"I am definitely going to come back. Bring my kids and my boyfriend," said another.

For some, the visit was symbolic: a chance to be part of a major step in the recovery of the city almost 14 years after 9/11.

"We've been waiting for it for a long time and to be part of the opening day is obviously a privilege. But I think it's a declaration that we get back up again and get on with life," said one visitor.

"I think it's pretty awesome. I was glad to be here for today to be here on the inaugural day of the opening of this building to the public. I had a great time," said another.

The view is a lot better once the clouds start moving out.

For more information, visit oneworldobservatory.com.