Which material inspired the design of the Cloud Gate sculpture?

The design of the Cloud Gate sculpture, also known as "The Bean," was inspired by the appearance and qualities of liquid mercury. The polished, reflective surface of the sculpture mimics the fluidity and mirror-like sheen of mercury, creating a dynamic interaction with the surrounding environment, including the sky and skyline of Chicago. This effect not only adds to the visual appeal of the sculpture but also allows it to engage with the viewer in unique ways, reflecting both the landscape and the people nearby. The choice of this inspiration is fundamental to the concept of the sculpture, as it embodies a sense of movement and transformation, much like the properties of liquid mercury. This quality sets it apart from other materials like steel, glass, or aluminum, which do not evoke the same connotations of fluidity and reflective depth.