Umbrellas, 1995, stainless steel, European Union Council of Ministers, Brussels, Belgium. Mobile with water. Umbrellas, 1995, stainless steel, European Union Council of Ministers, Brussels, Belgium. Mobile with water. Poseidon, 1957, stainless steel, height 400 cm, George Washington University, Washington DC, USA Umbrellas, 1995, stainless steel, Venice, Italy Tel- Néant, Berlin, Germany Lenses, 1978, stainless steel and plexiglass, height 240 cm, Wisconsin, USA Spirals and Lenses, 1976, Campo Pisani, Venice, Italy