Radically adapting the Minimalist incorporation of the perceiving viewer into the space of the artwork, a number of artists working today have created installations which depend upon the viewer's active participation for their completion. Generous in spirit, these works act as zones for social exchange, activating the space between people. Piotr Uklański's adaptable wall-to-wall installation Untitled (Dance Floor) (1996) transforms the institutional space of the museum or gallery into a sound-synchronized, light-flashing disco, subverting the normal use of the site and encouraging visitors to dance, mingle, and otherwise interact with one another.

Similarly, Rirkrit Tiravanija’s large-scale installation untitled 2002 (he promised) (2002) creates a platform for a whole range of free activities for the public: past programs have included film and lecture series, concerts, Pilates classes, and children's activities. Using chrome and stainless steel to replicate R. M. Schindler's famous open-structure studio and residence in West Hollywood (1921–22), Tiravanija dematerializes an icon of Modernist architecture and transforms it into a series of reflections of the surrounding people and activities.

ABOVE, LEFT TO RIGHT:
Piotr Uklański, Untitled (Dance Floor), 1996. Plexiglas, colored lightbulbs, raised floor structure, computer-controlled sound system, dimensions variable. Solomon R. Guggenheim Museum, New York, Purchased with funds contributed by the International Director's Council and Executive Committee Members: Tiqui Atencio, Christina Baker, Ruth Baum, Edythe Broad, Janna Bullock, Rita Rovelli Caltagirone, Dimitris Daskalopoulos, Harry David, Shirley Fiterman, Laurence Graff, Nicki Harris, Dakis Joannou, Rachel Lehmann, Linda Macklowe, Peter Norton, Tonino Perna, Simonetta Seragnoli, Cathie Shriro, Ginny Williams, and Elliot K. Wolk, and Sustaining Members: Linda Fischbach, Beatrice Habermann, and Cargill and Donna MacMillan 2006.72

Rirkrit Tiravanija, Untitled 2002 (he promised), 2002. Chrome and stainless steel, 294.6 x 1198.9 x 599.4 cm approx. Solomon R. Guggenheim Museum, New York. Purchased with funds contributed by the International Director's Council and Executive Committee Members: Ruth Baum, Edythe Broad, Elaine Terner Cooper, Dimitris Daskalopoulos, Harry David, Gail May Engelberg, Shirley Fiterman, Nicki Harris, Dakis Joannou, Linda Macklowe, Peter Norton, Tonino Perna, Elizabeth Richebourg Rea, Mortimer D. A. Sackler, Simonetta Seragnoli, David Teiger, Ginny Williams, and Elliot K. Wolk, and Sustaining Members: Tiqui Atencio, Linda Fischbach, Beatrice Habermann, Miryam Knutson, and Cargill and Donna MacMillan; with additional funds contributed by American Express 2004.124 © Rirkrit Tiravanija and Gavin Brown's Enterprise, New York; Photo: Matthias Herrmann © Secession