Since the 1970s, Young and Zazeela have realized a long series of semi-permanent "Dream House" installations, which combine Young's just-intuned sine waves in elaborate, symmetrical configurations and Zazeela's quasi-calligraphic light sculptures. In July 1970 a model short-term "Dream House" was displayed to the public at the gallery Friedrich & Dahlem in Munich, Germany. Later, model "Dream House" environments were presented in various locations of Europe and the United States. In 1974, the two released "Dream House 78' 17"". From January through April 19, 2009, "Dream House" was installed in the Solomon R. Guggenheim Museum in New York as part of "The Third Mind" exhibition. A "Dream House" installation exists today at the MELA Foundation on 275 Church Street, New York above the couple's loft, and is open to the public.