Olafur Eliasson poses at the installation Your Spiral View as part of the exhibition Olafur Eliasson: In Real Life at the Tate Modern Gallery in London. (AP Photo/Frank Augstein)
A woman looks through a lens as part of the exhibition Olafur Eliasson: In Real Life at the Tate Modern Gallery in London. (AP Photo/Frank Augstein)A woman looks through a lens as part of the exhibition Olafur Eliasson: In Real Life at the Tate Modern Gallery in London. (AP Photo/Frank Augstein)A visitor touches the Moss Wall, as part of the exhibition Olafur Eliasson: In Real Life at the Tate Modern Gallery in London. (AP Photo/Frank Augstein)Visitors play with the installation Your Uncertain Shadow, as part of the exhibition Olafur Eliasson: In Real Life at the Tate Modern Gallery in London. (AP Photo/Frank Augstein)A gallery employee stands in the rainbow colours of the installation Beauty, where fine sprayed water is poured down and illuminated by a light, at the Tate Modern in London. (AP Photo/Frank Augstein)A gallery employee stands in the rainbow colours of the installation Beauty, where fine sprayed water is poured down and illuminated by a light, at the Tate Modern in London. (AP Photo/Frank Augstein)A gallery employee stands in the rainbow colours of the installation Beauty, where fine sprayed water is poured down and illuminated by a light, at the Tate Modern in London. (AP Photo/Frank Augstein)Visitors interact with the installation Your Uncertain Shadow, as part of the exhibition Olafur Eliasson: In Real Life at the Tate Modern Gallery in London. (AP Photo/Frank Augstein)Visitors play with the installation Your Uncertain Shadow, as part of the exhibition Olafur Eliasson: In Real Life at the Tate Modern Gallery in London. (AP Photo/Frank Augstein)Visitors interact with the installation Your Uncertain Shadow, as part of the exhibition Olafur Eliasson: In Real Life at the Tate Modern Gallery in London. (AP Photo/Frank Augstein)Olafur Eliasson poses at the installation Your Spiral View as part of the exhibition Olafur Eliasson: In Real Life at the Tate Modern Gallery in London. (AP Photo/Frank Augstein)Olafur Eliasson poses at the installation Your Spiral View as part of the exhibition Olafur Eliasson: In Real Life at the Tate Modern Gallery in London. (AP Photo/Frank Augstein)A waterfall installation outside the Tate Modern Gallery, in London, as part of the exhibition Olafur Eliasson: In Real Life. (AP Photo/Frank Augstein)