Dan Graham started out as a gallerist and critic. He was self-taught, with no further education beyond high school. In his early 20s, he co-established John Daniels Gallery in New York, where many artists oriented towards minimalism would show their work, often early on in their carreers; Sol Lewitt being one example. Graham’s first solo exhibition as an artist was at John Daniels in 1969. With his site specific and conceptual art, Graham became a prominent figure on the avant-garde art scene in New York in the 1970s, alongside Robert Smithson (1938–1973), known for his land art, and Gordon Matta-Clark (1943–1978), whose practice was more politically engaged and directed toward architectonic art projects. Graham’s artistic expression was diverse and interdisciplinary. It included photography, performance, video installation, architectural models and the installations which have made him world famous - the glass pavilions. While his approach to art was intellectual and attested to abstraction and minimalism, he never lost sight of the human condition and cultural progress. His works always relate to the public; they confront the spectators and to make them envision themselves as part of the work itself. His glass pavilions dissolve the boundaries between art, surroundings and onlooker. Dan Graham participated in Skulpturstopp and Artscape Nordland with glass pavilions at Lemonsjøen in Vågå and in Lyngvær, Vågan, inaugurated in 1996. Among larger displays of his work, Public/Private (1994) at the Moore College of Art and Design in Philadelphia must be mentioned. A large retrospective was held in 2001, at Musee d’Art Moderne de la Ville in Paris, Kroller-Müller Museum, in Otterlo, The Netherlands, and Kiasma Museum in Helsinki. 2009 was marked with major retrospectives at the Museum of Contemporary Art, Los Angeles; Whitney Museum of American Art, New York; and the Walker Art Center, Minneapolis. Graham also exhibited at the Venice Biennale in 1976, 2003, 2004 and 2005, at Documenta V, VI, VII, IX and X (1972, 1977, 1982, 1992 and 1997), and at Skulptur Projekte Münster 1987 and 1997.