Check out the view from atop One World Trade Center (video)

We're getting vertigo just watching this video, which offers a preview of the 100th-floor obeservatory at 1 WTC.

Though One World Trade Center won't be open to the public for at least another year (if not longer), if you're curious to see what the view is like from the building—which will become the tallest structure in the city when it debuts—check out the video below.

The Port Authority and the building's developers led tours of the 100th-floor observation deck, which will open in 2015. The views are quite breathtaking—unless, of course, you have a fear of heights.