Cloud Gate is a public sculpture by British artist Anish Kapoor. It is the centerpiece of the AT&T Plaza in Millennium Park within the Loop community area of Chicago, Illinois, and is located on top of Park Grill and adjacent to the Chase Promenade. The sculpture was constructed between 2004 and 2006 and was temporarily unveiled in the summer of 2004. Nicknamed "The Bean" because of its legume-like shape, its exterior consists of 168 highly polished stainless steel plates. It is 33 feet by 66 feet by 42 feet (10 m × 20 m × 13 m), and weighs 110 short tons (99.8 t; 98.2 long tons). The sculpture and the plaza are sometimes referred to jointly as "Cloud Gate on the AT&T Plaza" or "Cloud Gate on AT&T Plaza".
Cloud Gate has become a very popular sculpture that is known worldwide. Inspired by liquid mercury, the sculpture's exterior reflects and transforms the city's skyline. Visitors are able to walk around and under Cloud Gate's arch, which is 12 feet (3.7 m) high. On the underside of the sculpture is the omphalos, a concave chamber that warps and multiplies reflections. The sculpture builds upon many of Kapoor's artistic themes, although many tourists simply view the sculpture and its unique reflective properties as a photo-taking opportunity.