One Way Colour Tunnel by Olafur Eliasson. This is a tunnel made up of light-shattering translucent and reflective triangular panels of coated acrylic, iresembling a walkway of stained glass. This is at the San Francisco Museum of Modern Art.
Gabby O’Connor, "What Lies Beneath", an installation of dyed and lacquered tissue paper stapled together and lit with natural light augmented by fluorescent lights. I love how this soft light fills the room.