The Terrain Gallery, or the Terrain, is an art gallery and educational center in SoHo, New York City. It was founded in 1955 with a philosophic basis: the ideas of Aesthetic Realism and the Siegel Theory of Opposites, developed by American poet and educator Eli Siegel. Its motto is a statement by Siegel: "In reality opposites are one; art shows this."
Aesthetic Realism and the Siegel Theory of Opposites:
The Terrain Gallery differed from other art galleries of the time in several ways. It held large group exhibitions that successfully combined diverse stylistic tendencies, such as realism and abstraction, when this was unusual. Painting, sculpture, watercolor, and graphics were brought together under the titles "Abstract and Concrete," "Depth and Surface," "Logic and Emotion," and "Rest and Motion". The Terrain Gallery also held “one of the first exhibitions honoring photography as a fine art” and silkscreens as major work.