A shopping mall is a modern, chiefly North American, term for a form of shopping precinct or shopping center (also spelled shopping centre), in which one or more buildings form a complex of shops representing merchandisers with interconnecting walkways that enable customers to walk from unit to unit. A shopping arcade is a specific type of shopping precinct which is usually distinguished in English for mall shopping by the fact that connecting walkways are not owned by a single proprietor and are in open air. Shopping malls in 2017 accounted for 8% of retailing space in the United States.Many early shopping arcades such as the Burlington Arcade in London, the Galleria Vittorio Emanuele II in Milan, and numerous arcades in Paris are famous and still trading. However, many smaller arcades have been demolished, replaced with large centers or "malls", often accessible by vehicle. Technical innovations such as electric lighting and escalators were introduced from the late 19th century.
From the late 20th century, entertainment venues such as movie theaters and restaurants began to be added. As a single built structure, early shopping centers were often architecturally significant constructions, enabling wealthier patrons to buy goods in spaces protected from the weather.