Shopping mall
Enclosed malls

The enclosed shopping center, which would eventually be known as the shopping mall, did not appear in mainstream until the mid-1950s. One of the earliest examples was the Valley Fair Shopping Center in Appleton, Wisconsin, which opened on March 10, 1955. Valley Fair featured a number of modern features including central heating and cooling, a large outdoor parking area, semi-detached anchor stores, and restaurants. Later that year the world's first fully enclosed shopping mall was opened in Luleå, in northern Sweden (architect: Ralph Erskine) and was named Shopping; the region now claims the highest shopping center density in Europe.

The idea of a regionally-sized, fully enclosed shopping complex was pioneered in 1956 by the Austrian-born architect and American immigrant Victor Gruen. This new generation of regional-size shopping centers began with the Gruen-designed Southdale Center, which opened in the Twin Cities suburb of Edina, Minnesota, United States in October 1956. For pioneering the soon-to-be enormously popular mall concept in this form, Gruen has been called the "most influential architect of the twentieth century" by Malcolm Gladwell.

The first retail complex to be promoted as a "mall" was Paramus, New Jersey 's Bergen Mall, which opened with an open-air format on November 14, 1957, and was later enclosed in 1973. Aside from Southdale Center, significant early enclosed shopping malls were Harundale Mall (1958) in Glen Burnie, Maryland, Big Town Mall (1959) in Mesquite, Texas, Chris-Town Mall (1961) in Phoenix, Arizona, and Randhurst Center (1962) in Mount Prospect, Illinois.

Other early malls moved retailing away from the dense, commercial downtowns into the largely residential suburbs. This formula (enclosed space with stores attached, away from downtown, and accessible only by automobile) became a popular way to build retail across the world. Gruen himself came to abhor this effect of his new design; he decried the creation of enormous "land wasting seas of parking" and the spread of suburban sprawl.

Even though malls mostly appeared in suburban areas in the U.S., some U.S. cities facilitated the construction of enclosed malls downtown as an effort to revive city centers and allow them to compete effectively with suburban malls. Examples included Main Place Mall in Buffalo (1969) and The Gallery (1977, now Fashion District Philadelphia) in Philadelphia. Other cities created open-air pedestrian malls.

In the United States, developers such as A. Alfred Taubman of Taubman Centers extended the concept further in 1980, with terrazzo tiles at the Mall at Short Hills in New Jersey, indoor fountains, and two levels allowing a shopper to make a circuit of all the stores. Taubman believed carpeting increased friction, slowing down customers, so it was removed. Fading daylight through glass panels was supplemented by gradually increased electric lighting, making it seem like the afternoon was lasting longer, which encouraged shoppers to linger.
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