High Quality Content by WIKIPEDIA articles! Four World Trade Center is a skyscraper under construction as part of the new World Trade Center in New York City at 150 Greenwich Street on the east side of Greenwich Street, across from the original location of the Twin Towers that were destroyed during the September 11 attacks. Pritzker Prize-winning architect Fumihiko Maki was awarded the contract to design the building, which will be 947 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, New York City.