"Look west," he advised.
One World Trade Center, formerly called the Freedom Tower, is scheduled to be completed in early 2014, with the observation deck opening in 2015.
The 104-story skyscraper at the northwest corner of the World Trade Center site will be the tallest building in the Western Hemisphere when it is completed and has been the tallest in New York for a year. Its highest-profile tenant will be magazine publisher Conde Nast.
The tower overlooks the World Trade Center memorial, where twin reflecting pools evoke the towers lost on September 11, 2001.
The observation deck tour will tell a more upbeat story.
Visitors will buy their tickets in the building's lobby, then take an escalator to the basement to hear a presentation on the construction of the building, featuring voices of some of the workers, as they wait in line for the elevators. The Port Authority said the "pre-show" would provide "an immersive background on the creation of the building."
The elevators to the observation deck will travel more than 1,250 feet in about a minute, officials said. Once on the 102nd floor, visitors will watch a video about New York called "See Forever" before a curtain or scrim is raised, revealing the actual panoramic view. "Tour ambassadors" will be available to answer questions about the skyline, the Port Authority said.
There will be restaurants and snack bars on the 101st floor, a gift shop on the 100th floor and more videos on elevator ride down.
The cost to take the hour-plus tour has not been determined but officials said it would be comparable to similar attractions, with group discounts available. The 86th-floor observation deck at the Empire State Building costs US$25.
The north tower of the original World Trade Center featured a well-regarded restaurant called Windows on the World. The restaurant's staff and breakfast guests were among those killed when terrorists destroyed the building.
-AP