Modular art is art created by joining together standardized units (modules) to form larger, more complex compositions. In some works the units can be subsequently moved, removed and added to – that is, modulated – to create a new work of art, different from the original or ensuing configurations.
Historically, alterable objects of art have existed since the Renaissance, for example, in the Triptych "The Garden of Earthly Delights" by Hieronymus Bosch or in the so-called "alterable altarpieces", such as the Isenheim Altarpiece by Matthias Grünewald, or Albrecht Dürer's Paumgartner altarpiece, where changing motifs could be revised in accord with the changing themes of the ecclesiastical calendar.
Beginning in the first half of the 20th century, a number of contemporary artists sought to incorporate kinetic techniques into their work in an attempt to overcome what they saw as the predominantly static nature of art. Alexander Calder's mobiles are among the most widely known demonstrations of physical dynamism in the visual arts, in which form has the potential to continually vary through perpetual motion, sometimes even without the agency of the human hand. Jean Tinguely's efforts to create a self-destructive art machine constitute perhaps the ultimate expression of art's mutability, in this case by taking the form of its total eradication. Victor Vasarely postulated in his Manifest Jaune in 1955 in Paris that works of art should feature the properties of being multiplicable and repeatable in series. More recently, the notion that visual art need not be conceived solely in terms of perpetually fixed objects is embodied in performance and installation art by virtue of their unfolding and temporary qualities.
Modularity enters the modern artistic repertory largely through the disciplines of industrial design and architecture. Belgian architect Louis Herman De Koninck led a team of countrymen in creating one of the first modular product systems in their Cubex kitchen series of 1932. The series consisted of standardized and industrially produced components that could be combined and arrayed in limitless combinations to accommodate almost any size kitchen. New York designer Gilbert Rohde crafted several lines of modular casework for the Herman Miller Corporation in the 1930s and 40s; like De Koninck, Rohde standardized the units in dimensions, materials and configurations to facilitate mass production and interchangeability. His Executive Office Group (EOG) line, launched in 1942, was a similarly ground-breaking systems approach to office furniture. Just a year before Eero Saarinen and Charles Eames had jointly produced a suite of modular domestic furniture for the Red Lion Company, a result of a competition held by the Museum of Modern Art in New York. In 1950 Herman Miller brought out the EAS Storage Unit series by Charles and Ray Eames, a very successful modular shelving and wall unit system that remains in production today.