After 12 years of planning, designing and construction, the World Transportation Hub is now open. Like a bird in flight, this 8,000 square-foot structure is New York’s newest eye candy. Designed by architect Santiago Calatrava this four-billion-dollar structure is now the third largest train station in New York City and the most expensive in the world. Sandwiched between One World Trade Center and St. Paul’s Chapel, the hub is a stop for the Path rail system and the 1, A, C and R subway lines.