What s also special on this day is that the retractable skylight opens for two hours on the anniversary of 9 11.
Oculus opening roof.
It is the centerpiece of the world trade center transportation hub.
September 11th marks a very important day for the oculus.
In addition to being a memorial the oculus is also a monument to life he added.
Today coinciding with the time at which.
The roof opened at 8 46 a m.
The day is honored by american flags hanging from the roof.
For one day a year the oculus opens its eye to the sky the oculus is located in lower manhattan next to the former twin towers.
The process of building this oculus starts with building up the opening which is made up of multiple layers of plywood cut to the correct radius.
Removing the glass ceiling allows light to flood the main hall of the oculus.
To achieve this a nail is driven into the ground.
Under his jaw dropping proposal in 2004 he.
A string is tied to the nail and a predetermined length of string is then walked around in order to create the diameter of the pieces to be cut.