The drop factory, made in collaboration with Einar Thorsteinn, is a geodesic dome made from a steel framework and triangulated mirror panels that are reflective on both sides. The outside visually fragments the surrounding space, while inside, the panels multiply an installation using water and strobe lights. There have been two different versions of the interior to date: in 2000, in the Sculpture Hall of the St. Louis Art Museum, the dome was constructed over an existing fountain. Strobe lights, mounted to scaffolding constructed around a Renaissance sculpture of Neptune at the centre of the fountain, periodically lit up the water flowing from the fountain, suspending the streams in mid-air. The second version, at ZKM in Karlsruhe, contained a slightly different construction: a tube suspended from the ceiling of the dome released drops of water that were frozen in free fall by strobe lights.