This Is a Model Of Four World Trade Center (also known by its street address, 150 Greenwich Street) It is a skyscraper under construction as part of the new World Trade Center complex. It is located on the southeast corner of the 16-acre World Trade Center site, where the original nine-story 4 World Trade Center stood. Pritzker Prize-winning architect Fumihiko Maki was awarded the contract to design the building, which will be 974 feet (288 m) tall, making it the fourth tallest skyscraper planned on the World Trade Center site. The total floor space of the building is anticipated to include 1.8 million square feet (167,000 square meter) of office and retail space. The building's groundbreaking took place in January 2008, and it is scheduled to be completed by 2013. The structural engineer for the building is Leslie E. Robertson Associates. Robertson Was Also The Sructural Engineer For The Twin Towers And The Previous WTC Complex Destroyed In 9/11.....What a Legend!.............Enjoy!