The state-of-the-art World Trade Center Transportation Hub, completed in 2016, serves 250,000 Port Authority Trans-Hudson (PATH) daily commuters and millions of annual visitors from around the world. At approximately 800,000 square feet, the Hub, designed by internationally acclaimed architect Santiago Calatrava, is the third largest transportation center in New York City. The World Trade Center Transportation Hub's concourse will ultimately connect visitors to 11 different subway lines; the PATH rail system; the Battery Park City Ferry Terminal; the National September 11 Memorial & Museum; World Trade Center Towers 1, 2, 3, and 4; and Brookfield Place (formerly known as the World Financial Center), which houses the Winter Garden. It represents the most integrated network of underground pedestrian connections in New York City. The “Oculus” serves as the centerpiece of the World Trade Center Transportation Hub, incorporating 78,000 square feet of multi level state-of-the-art retail and dining. The concourses emanating from the Oculus link the entirety of the site above and below grade. With an additional 290,000 square feet of exciting, multi-level retail and dining space, the World Trade Center site is the focal point of Lower Manhattan.