the Albert canal. All other redoubts also still exist. The redoubts Smoutakker and Schilde were blown up by the retreating Belgians in the First World War. Of the Brialmont forts 2–8 two are a museum, two are nature reserve, one is communal property, one recreation area, one property of the University of Antwerp. Of the forts from the period after 1870 two are still military domain, one is a recreation complex and one nature reserve. Of the forts from the period 1877–1883 one is military domain, one nature reserve, one communal property (formerly Ministry of Finance) and one is owned by a shooting club (plus radio amateurs). Redoubt Kapellen is military domain, redoubt Duffel private and will be opened to public after maintenance financed by European funds. Fort Sint Katelijne Waver has been overbuilt with recreation houses. Fort van Stabroek is recreational property (paint ball). Of the forts from the period 1906-1914, three are still military domain, one has been overbuilt with recreation houses, one with fishing houses, two serve as museums, two are private property and three recreation area. Many of the forts now serve as hibernation reserve for bats. This is the case for five of the Brialmont forts 2–8 and for 11 of the later forts. Fort Brasschaat has the largest numbers of hibernating bats, between 800 and 900. The other forts accommodate smaller numbers between 20 and over 300. See also Fortified position of Liège Fortified position of Namur External links Fortifications built by Belgium Defence Line of Amsterdam Fortifications in Belgium History of Antwerp Forts in Belgium National redoubts