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La Défense (pronounced [la de.fɑ̃s]) is a major business district of the Paris aire urbaine. With a population of 20,000, it is centered in an orbital motorway straddling the Hauts-de-Seine département municipalities of Nanterre, Courbevoie, and Puteaux. The district is at the westernmost extremity of Paris's 10 km long Historical Axis, which starts at the Louvre in Central Paris and continues along the Champs-Élysées, well beyond the Arc de Triomphe before culminating at La Défense.

Around its 110-metre (360 ft)-high Grande Arche and esplanade ("le Parvis"), La Défense holds many of the Paris urban area's tallest high-rises. With its 77.5 acres (314,000 m²), its 72 glass-and-steel slick buildings including 14 high-rises above 150 metres (490 ft), its 180,000 daily workers, and 3.5 million square metres (37.7 million sq ft) of office space, La Défense is Europe's largest purpose-built business district.

Postmodern architecture began as an international style the first examples of which are generally cited as being from the 1950s, but did not become a movement until the late 1970s and continues to influence present-day architecture. Postmodernity in architecture is said to be heralded by the return of "wit, ornament and reference" to architecture in response to the formalism of the International Style of modernism. As with many cultural movements, some of Postmodernism's most pronounced and visible ideas can be seen in architecture. The functional and formalized shapes and spaces of the modernist style are replaced by diverse aesthetics: styles collide, form is adopted for its own sake, and new ways of viewing familiar styles and space abound. Perhaps most obviously, architects rediscovered the expressive and symbolic value of architectural elements and forms that had evolved through centuries of building which had been abandoned by the modern style.

Influential early large-scale examples of postmodern architecture are Michael Graves' Portland Building in Portland, Oregon and Philip Johnson's Sony Building (originally AT&T Building) in New York City, which borrows elements and references from the past and reintroduces color and symbolism to architecture.

Postmodern architecture has also been described as neo-eclectic, where reference and ornament have returned to the facade, replacing the aggressively unornamented modern styles. This eclecticism is often combined with the use of non-orthogonal angles and unusual surfaces, most famously in the State Gallery of Stuttgart by James Stirling and the Piazza d'Italia by Charles Moore. The Scottish Parliament Building in Edinburgh has also been cited as being of postmodern vogue.^{[citation needed]}