U.S. chiefly in the 1960s, some cities converted a main shopping street (usually several blocks of one street only) to pedestrian zones known at the time as shopping malls (i.e. the original meaning of "mall": a "promenade"), but now referred to as pedestrian malls. Shopping arcade A shopping arcade is a type of shopping precinct that developed earlier and in which the connecting walkways are not owned by a single proprietor and may be in the open air or covered by a ground-floor loggia. 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 functioning as shopping centers, while many others have been demolished. In Russia, centuries-old shopping centers the size of regional malls still operate, consisting of multiple arcades. They developed from previous so-called "trading rows", which were essentially markets where traders could obtain space to sell their goods. Great Gostiny Dvor in Saint Petersburg in its present buildings dates back to the 1760s. With a total area of , GUM in Moscow, opened in its present buildings in the 1890s. In historical buildings Historic and/or monumental buildings are sometimes converted into shopping centers, often forming part of a larger city center shopping district that otherwise consists mostly of on-street stores. Examples are the former main post office of Amsterdam, now Magna Plaza; the in Antwerp, Belgium, a former exhibition "palace"; the former Sears warehouse, now Ponce City Market in Atlanta; the former Emporium-Capwell department store in San Francisco, now San Francisco Centre; Georgetown Park in Washington, D.C., and the Abasto de Buenos Aires, formerly the city's wholesale produce market. History Shopping centers are not a recent innovation. One of the earliest examples of public shopping areas comes from ancient Rome, in forums where shopping markets were located. One of the earliest public shopping centers is Trajan's Market in Rome located in Trajan's Forum. Trajan's Market was probably built around 100–110 AD by Apollodorus of Damascus, and it is thought to be the world's oldest shopping center. The Grand Bazaar of Istanbul was built in the 15th century and is still one of the largest covered shopping centers in the world, with more than 58 streets and 4,000 shops. Numerous other covered shopping arcades, such as the 19th-century Al-Hamidiyah Souq in Damascus, Syria, might also be considered as precursors to the present-day