Following a series of performance works and temporary exhibitions at Friedrich's gallery in SoHo, including the "Dream Festival" by La Monte Young and Marian Zazeela, Dia installed its first public artwork in 1975 at the Kunstmuseum Basel, in Basel, Switzerland. This artwork, Untitled (In memory of Urs Graf) by Dan Flavin, was installed in the museum's courtyard and consists of fluorescent tubes in varying colors outlining the space. This was followed in 1976 by a retrospective of six theater pieces by Robert Whitman
