How did they build the Fireworks of Glass in the Indy children's museum built?

The sculpture Fireworks of Glass Tower and Ceiling in the Children's Museum of Indianapolis was built using a total of 4,800 pieces of red, yellow, and blue glass individually blown by a team of glassblowers in creator Dale Chihuly's Tacoma studio. The structure includes a 43-foot tower composed of 3,200 pieces of glass resting on a glass plate under a pergola ceiling made from 1,600 pieces of glass. The tower contains pieces of twisted glass suspended by steel cables.