Some incredible photos have been circulating this week of workers hoisting a section of escalator to the upper floors of One World Trade Center in lower Manhattan. In the video below you’ll hear the photographer, Scott Lahmers, who works for ThyssenKrupp, describe the process of lifting the automated stairway to those dizzying heights. The tower you see in the background is Four World Trade Center. We orignally posted an image to our facebook page. Feel free to jump over there and like us.

The One World Trade Center, which was formerly named Freedom Tower, is currently under construction on Ground Zero in the very heart of New York, the place where the World Trade Center was destroyed on September 11, 2001.

ThyssenKrupp Elevator was awarded a contract to install all 71 elevators, nine escalators and the maintenance. The tower will have the five fastest elevators in the Western Hemisphere, according to ThyssenKrupp. Express cars, serving the restaurant and observatory, will reach a top speed of 2,000 feet a minute, meaning that the journey to the top will take less than forty-five seconds.

Click on the photo below for a larger view.

Photo Credit: Scott Lahmers