Vorort

Vorort (plural: "Vororte") is a German term that could be considered roughly equivalent to a suburb as that term is understood in Britain and North America (but not in Australia and New Zealand, where a "suburb" of a city is necessarily within the city). Vororte usually have their own business centre. They are the remainders of formerly separate neighbour towns, or have been founded as satellite towns. The term is contrasted with "Vorstadt", which describes a more densely populated area grown at the outline of a city centre.
Switzerland.
In Swiss history, "Vorort" referred to the temporary "presidency" of a canton or the cantonal capital. During the Old Swiss Confederacy, the canton or city that convened the Tagsatzung and chaired it was called the "Vorort". In the 15th century, the city of Zürich became the "de facto" Vorort of the Confederacy. Since the Reformation in Switzerland, Lucerne became the Vorort of the Catholic cantons. With the 1798 establishment of the Helvetic Republic the Vororte were abolished and instead Aarau was made capital city, then Lucerne, then Bern. After the Act of Mediation, the "Vorort of Switzerland" would rotate each year between the capital of Aarau and the cities of Zürich, Bern, Lucerne, Fribourg, Solothurn and Basel. In 1815, the choice of Vororte was restricted to Zürich, Bern and Lucerne, who in turn served as biennial seat of government until 1847. In 1848, Bern became the permanent seat of the Swiss Federal Government and thus the "de facto" capital of Switzerland.
Vienna.
In Vienna, the historical terms "Vorstädte" and "Vororte" have very specific meanings. The "Vorstädte" were located outside the city walls, but within the "Linienwall", a second ring of fortifications outside the city. The city walls were located in the place of the modern Ringstraße, while the "Linienwall" has been removed to give way to the "Gürtel" (both being rings of streets around the central city). All of the historical municipalities were merged into Vienna during the late 19th century. The former "Vororte", which have in large parts become as urban as the "Vorstädte", now make up Vienna's so-called outer districts (10th to 19th and 21st to 23rd district).