Millennium Park, Chicago, Illinois, 2005 Site Project Supervisor, MTH Industries & Performance Structures Seamlessly welded piece, crafted from individual sheets of stainless steel, which were hand-rolled and polished. To ensure that each sheet was an exact color match, the steel came from a single ingot, poured in Sweden. Materials: Stainless Steel Dimensions: 33 feet high x 66 feet wide x 42 feet long