structural:summarization, information:classification, quality:correction
Geography

Flanders shares its borders with Wallonia in the south, Brussels being an enclave within the Flemish Region. The rest of the border is shared with the Netherlands (Zeelandic Flanders in Zeeland, North Brabant and Limburg) in the north and east, and with France (French Flanders in Hauts-de-France) and the North Sea in the west. Voeren is an exclave of Flanders between Wallonia and the Netherlands, while Baarle-Hertog in Flanders forms a complicated series of enclaves and exclaves with Baarle-Nassau in the Netherlands. Germany, although bordering Wallonia and close to Voeren in Limburg, does not share a border with Flanders. The German-speaking Community of Belgium, also close to Voeren, does not border Flanders either. (The commune of Plombières, majority French speaking, lies between them.)

Flanders is a highly urbanised area, lying completely within the Blue Banana. Antwerp, Ghent, Bruges and Leuven are the largest cities of the Flemish Region. Antwerp has a population of more than 500,000 citizens and is the largest city, Ghent has a population of 250,000 citizens, followed by Bruges with 120,000 citizens and Leuven counts almost 100,000 citizens.

Brussels is a part of Flanders as far as community matters are concerned, but does not belong to the Flemish Region.

Flanders has two main geographical regions: the coastal Yser basin plain in the north-west and a central plain. The first consists mainly of sand dunes and clayey alluvial soils in the polders. Polders are areas of land, close to or below sea level that have been reclaimed from the sea, from which they are protected by dikes or, a little further inland, by fields that have been drained with canals. With similar soils along the lowermost Scheldt basin starts the central plain, a smooth, slowly rising fertile area irrigated by many waterways that reaches an average height of about five metres (16 feet) above sea level with wide valleys of its rivers upstream as well as the Campine region to the east having sandy soils at altitudes around thirty metres. Near its southern edges close to Wallonia one can find slightly rougher land, richer in calcium, with low hills reaching up to 150 m (490 ft) and small valleys, and at the eastern border with the Netherlands, in the Meuse basin, there are marl caves (mergelgrotten). Its exclave around Voeren between the Dutch border and Wallonia's Liège Province attains a maximum altitude of 288 m (945 ft) above sea level.