A corner sculpture in pink, yellow, blue, and green fluorescent light by Dan Flavin, titled untitled (in honor of Harold Joachim) 3, dated 1977.

Dan Flavin 

untitled (in honor of Harold Joachim) 3

, 1977

pink, yellow, blue, and green fluorescent light

8 ft. (244 cm) square across a corner

Photo by Billy Jim 
© Stephen Flavin/Artists Rights Society (ARS), New York

A corner sculpture in pink, yellow, blue, and green fluorescent light by Dan Flavin, titled untitled (in honor of Harold Joachim) 3, dated 1977.