Altstadt (German:[ˈaltˌʃtat]ⓘ) is the German language word for "old town", and generally refers to the historical town or city centre within the old town or city wall, in contrast to younger suburbs outside. Neustadt (new town), the logical opposite of Altstadt, mostly stands for a part of the "Altstadt" in modern sense, sometimes only a few years younger than the oldest part, e. g. a late medieval enlargement.
Germany
Most German towns have an Altstadt, even though the ravages of war have destroyed many of them, especially during the Thirty Years' War (1618–1648). Another notable example was during the Nine Years' War (1688–1697), where Mélac's aggressive tactics devastated many cities and large parts of South Western Germany, like the Heidelberg Castle.