Jan Sawka's UMU Sculptures, in which light and color dance. The sculptures, designed by Jan Sawka, combine painting and artwork elements made by Sawka, combined with new technology. UMU Glass is a type of SmartGlass developed by NSG that switches transparency/translucency properties. The Sun Tower is 8' tall, Caligraphy Tower 9' tall. The "Magic Cubes" are 7 feet tall each and they are motion-activated. These sculptures were made in 2004.