Danish-Icelandic artist Olafur Eliasson (b. 1967) is both a one-time break-dancing champion and a solo exhibitioner in some of the world’s most renowned galleries. His large-scale installation The Weather Project, at London’s Tate Modern in 2003 and 2004, encouraged visitors to take to the floor in a different way—–by lying down on cold, hard concrete to gaze at an artificial sun and never-ending sky.