 Extensive retrospectives have been presented at the Centre Georges Pompidou in Paris (1991) and the Boston Museum of Fine Arts (1991).He has presented installations at the Stedelijk Museum Amsterdam, Museum Boymans-van Beuningen, Rotterdam (1993), London's Clink Street Vaults (1995), Neue Nationalgalerie (2003), and the Solomon R. Guggenheim Museum in New York and the Guggenheim Museum Bilbao.His tribute to Isamu Noguchi was exhibited at the Seattle Art Museum and his "Voom Portraits" exhibition traveled to Hamburg, Milan, Miami, and Philadelphia.