4-Way Tower, 1963
aluminum & stainless steel
84 x 11 x 11 inches
214 x 28 x 28cm
E.C. Column, 1969-81
aluminum & stainless steel
42 x 11 x 9.5 feet
14 x 4 x 4m
Exhibition: Albright-Knox Art Gallery
Needle Tower, 1968
aluminum & stainless steel
60 x 20 x 20 feet
18.2 x 6 x 6m
Collection: Hirshhorn Museum & Sculpture Garden, Washington, D.C.
Needle Tower II, 1969
aluminum & stainless steel
90 x 18 x 18 feet
30 x 6 x 6m
Collection: Kröller Müller Museum, Otterlo, Holland
Penta Tower, 2001-03
aluminum & stainless steel
57 x 14 x 15 inches
145 x 35.5 x 35.5cm
Tetra Tower, 1963-2001
aluminum & stainless steel
58 x 18 x 18 inches
147 x 46 x 46cm
Zig-Zag Tower, 1997
painted stainless steel
45.5 x 9 x 7.75 inches
115.6 x 22.9 x 19.7cm