Piz Uter , by james turrell , 2005 , installation , Environmental (Land) Art, Light and Space style , from the series Skyspaces , Sky, Horizon, Light, Atmosphere
A blue circle that is in the middle of a room.
 of a room. The room is empty. The walls are a light blue color. There is a bright blue light at the bottom of the room. At the top, there is a circle that is a darker shade of purple.