Photo Courtesy Silverstein Properties

After five years of construction, 4 WTC—the first tower on the original 16-acre World Trade Center site—was set to open on Nov. 13.

Designed by Fumihiko Maki, the 977-ft-tall office building is the shortest of the four towers planned for the site. Tishman Construction is the construction manager for the 2.3-million-sq-ft structure as well as for 1 WTC, which is set to open early next year, and 3 WTC, a 1,170-ft tower whose eight-story podium is nearly completed. Two WTC has so far been built to street level. The Port Authority of New York & New Jersey will occupy about a quarter of 4 WTC.