The Lightning Field (1977) is De Maria’s best-known work. It consists of 400 stainless steel posts arranged in a calculated grid over an area of 1 mile × 1 km. The time of day and weather change the optical effects. It also lights up during thunder storms. The field is commissioned and maintained by Dia Art Foundation. It has been speculated that The Lightning Field influenced the imagery of author Cormac McCarthy's epilogue in his 1985 novel, Blood Meridian.
In the 1960s and 1970s, De Maria created enduring urban works. As complementary pieces, Vertical Earth Kilometer (1977), and The Broken Kilometer (1979), address the idea of unseen or abstracted distance. Vertical Earth Kilometer is a one-kilometer-long brass rod, two inches in diameter, drilled into Friedrichsplatz Park in central Kassel, Germany. The rod’s circular top, flush to the earth’s surface, is framed by a two-meter square plate of red sandstone.In 1979, De Maria meticulously arranged five hundred brass rods for The Broken Kilometer, a permanent installation at 393 West Broadway in New York.
The Broken Kilometer is also part of De Maria's series of monumental sculptures using a horizontal format, which feature groupings of elements ordered according to precise calculations. This series includes 360°/I-Ching (1981), A Computer Which Will Solve Every Problem in the World/3-12 Polygon (1984), 13, 14, 15 Meter Rows (1985), Apollo's Ecstasy (1990), and The 2000 Sculpture (1992).
In 1989 De Maria completed a sphere of polished granite for the Assemblée Nationale in Paris,followed in 2000 and 2004 by works for two museums on Naoshima Island in Japan, the Naoshima Contemporary Art Museum and the Chichu Art Museum. A comparable, 25-ton sculpture entitled Large Red Sphere (2002) was installed in the Türkentor, Munich, in 2010.Wikipedia