Denise Scott Brown in the context of "Learning from Las Vegas"

Postmodern architecture is a style or movement which emerged in the 1960s as a reaction against the austerity, formality, and lack of variety of modern architecture, particularly in the international style championed by Philip Johnson and Henry-Russell Hitchcock. The movement was formally introduced by the architect and urban planner Denise Scott Brown and architectural theorist Robert Venturi in their 1972 book Learning from Las Vegas, building upon Venturi's "gentle manifesto" Complexity and Contradiction in Architecture, published by the Museum of Modern Art in New York in 1966.

The style flourished from the 1980s through the 1990s, particularly in the work of Scott Brown & Venturi, Philip Johnson, Charles Moore and Michael Graves. In the late 1990s, it divided into a multitude of new tendencies, including high-tech architecture, neo-futurism, new classical architecture, and deconstructivism. However, some buildings built after this period are still considered postmodern.

Robert Charles Venturi Jr. (June 25, 1925 – September 18, 2018) was an American architect, founding principal of the firm Venturi, Scott Brown and Associates.

Together with his wife and partner, Denise Scott Brown, he helped shape the way that architects, planners and students experience and think about architecture and the built environment. Their buildings, planning, theoretical writings, and teaching have also contributed to the expansion of discourse about architecture.