The first two phases of the World Trade Center Downtown Restoration program were 17 years in the making, launched in early 2002, just after the Sept. 11 terrorist attacks and reaching substantial completion in 2019 under the $20-billion effort to create 10 million sq ft of new facilities.

Core stability and rail lines were among the challenges for the hotel, condo development that has been more than 20 years in the making.

During a visit to the 76th floor of 3 World Trade Center, project team members showed ENR how there are places for eight corner offices, rather than the usual four per story.

Developers broke ground earlier this month on a $460-million redevelopment of the 33-story New Orleans World Trade Center tower into a Four Seasons Hotel and Residences, bringing to fruition a restoration that has been more than 20 years in the making and mired in setbacks.

The World Trade Center Transportation Hub is part of a 16-acre redevelopment of lower Manhattan after the destruction of the Sept. 11, 2001, terror attack..

One World Trade Center’s 408-ft-tall steel spire, which sits atop the skyscraper’s 1,368-ft superstructure, makes the 1,776-ft-tall One WTC the tallest building in the Western Hemisphere and the fourth tallest in the world.