World Trade Center Transportation Hub / Santiago Calatrava. Opened in 2016 📸 Hufton+Crow The arched, elliptical structure – the Oculus – is approximately 350’ long, 115’ across at its widest point and rises to a height 96’ above grade at its apex. The structural steel ribs that form the Oculus extend upward, like outspread wings, to form a pair of canopies that rise to a maximum height of 168’ above grade. #santiagocalatrava