
1) Architectural design
Found on
https://www.crosswordclues.com/clue/skyspace

A skyspace is an architectural design in which a room, which is painted in a neutral color has a large hole in its ceiling which opens directly to the sky. The room, whose perimeter has benches, allows observers to look at the sky in such a way as though it were framed. LED lights which surround the hole can change colors to affect the viewer`s p....
Found on
http://en.wikipedia.org/wiki/Skyspace
No exact match found.