Walter de Maria, Lightning Field. 1977. Western New Mexico.

Michael Heizer, Double Negative. 1970. Overton, NV.

Christo and Jeanne-Claude, Valley Curtain. 1972. Rifle, CO.

James Turrell, Roden Crater. outside Flagstaff, AZ

Mierle Laderman Ukeles. Washing Piece, 1973

Robert Smithson, Spiral Jetty. 1970. Great Salt Lake, Utah

Robert Irwin, Flower Maze. Getty Center, Los Angeles