3 World Trade Centre

Designed by Richard Rogers, 3 World Trade Center at 175 Greenwich Street will rise 1,170 ft feet above street level. The 80-story building will include 2.8 million square feet of office space spread across 53 floors and five trading floors.

Office floorplates will range from 29,000 - 44,000 square feet and trading floors will include 68,000 square feet of space.  3 WTC will have five retail levels - one on the ground floor, two below-grade levels, and two levels above the ground floor.
The tower will consist of a central concrete core - steel encased in reinforced concrete — and be clad in an external structural steel frame. Safety systems are planned to exceed New York City building code and Port Authority of New York and New Jersey requirements. Designed to the highest energy efficiency ratings, 3 World Trade Center will seek to achieve the gold standard under the Leadership in Energy and Environmental Design (LEED) by the U.S. Green Building Council.
Designed by Rogers Stirk Harbour + Partners, 175 Greenwich Street will sit at the center of the various buildings around the WTC Memorial site, across Greenwich Street from the main axis formed by the memorial's two reflecting pools. The tower was designed to address this central position, its verticality accentuated relative to the memorial site. As suggested in the WTC Master Plan, the tower will be recognizable in the skyline, reaching higher than the adjacent and smaller building at 150 Greenwich Street and featuring a unique stepped profile and antennae.

The design employs a structural load-sharing system of diamond-shaped bracing, which helps to articulate the building's east-west configuration. All corners of the tower are column free to ensure that occupiers of the office levels have unimpeded 360-degree panoramic views of New York.

The upper levels of the tower appear to straddle the lower levels - referred to as the "podium building" - helping to reduce the impact of the building's high volume and emphasize the interlocking nature of the base with the upper part of the building. The lobby - three levels high - will be on Greenwich Street, providing tenants and visitors a "big picture window" onto the WTC Memorial.
175 Greenwich Street offers a strong interface with the public realm along Cortlandt and Dey Streets, both of which will be redeveloped into pedestrian areas. This, in turn, will improve the accessibility of the retail space in the building, as well as help to integrate it more completely with the WTC Transportation Hub to the north of Dey Street.