Batcolumn
Steel and aluminum painted with polyurethane enamel
96 ft. 8 in. (29.5 m) high x 9 ft. 9 in. (3 m) diameter, on base 4 ft. (1.2 m) high x 10 ft. (3.1 m) diameter
Harold Washington Social Security Center, 600 West Madison Street, Chicago
Commissioned March 1975 by the Art in Architecture Program of the United States General Services Administration in conjunction with the National Endowment for the Arts
Installed April 13, 1977
Inaugurated April 14, 1977
Photo: Attilio Maranzano