Architecture firm SOM has proposed adding a floating observation deck that slides up and down the sides of two new skyscrapers. SOM states that the hovering deck would increase the quality of the public space surrounding the building by adding an “iconic landmark” with a 360-degree panorama of the city skyline.
New York City could use some visually diverse architecture within it's usual building designs, but the cost for such a project would be unimaginable. Is it even engineer-able? I wouldn't trust it, personally.
\