4 World Trade Center (also known by its street address, 150 Greenwich Street) is a skyscraper that is part of the new World Trade Center complex in New York City. It opened to tenants and the public on November 13, 2013. It is located on the southeast corner of the  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. it is the second tallest skyscraper in the rebuilt World Trade Center, behind One World Trade Center, although 2 World Trade Center and 3 World Trade Center are planned to surpass the building's height upon completion. The total floor space of the building is expected to include 1.8 million square feet (167,000 square meters) of office and retail space. The building's groundbreaking took place in January 2008.