Though ceremonial topping out was celebrated last fall, BIG's tetrahedron on the far west side of Manhattan has finally received its peak. The mountainous building stands 450 feet tall and will eventually house 709 rental units on 32 floors. Installation of the exterior envelope is also underway, with curtain wall panels reaching the tenth floor on the north and east elevations, as well as the interior courtyard. Panels have also been installed on the lower levels of the sloping south facade. Completion looks set for late 2015 or early 2016.