The shadows and multiple color spectrum gives emotion and motion to the piece which would be otherwise not interesting without By Olafur Eliasson. It's real shadow, not faked in photoshop. each lamp is aligned differently.
"Multiverse", the largest and most complex light sculpture created by American artist Leo Villareal, may be seen and experienced by visitors as they pass through the Concourse walkway between the East and West Buildings of the National Gallery of Art.
Doris Salcedo, Installation at International Istanbul Biennial, Salcedo's idea was to create a "topography of war"--not tied to a specific historical event, but to war in general. wooden chairs piled high between two buildings in central Istanbul.