A fortified tower (also defensive tower or castle tower or, in context, just tower) is one of the defensive structures used in fortifications, such as castles, along with curtain walls. Castle towers can have a variety of different shapes and fulfil different functions.
Wall towers provide flanking fire (from crossbows or other projectile weapons) to a straight part of the curtain wall. Corner towers enfilade the two adjoining wall faces. If corner towers are far apart, additional flanking towers may be added between them. Towers in an outer curtain wall are often open at the back. Particularly large towers are often the strongest point of the castle: the keep or the bergfried. As the gate is always a vulnerable point of a castle, towers may be built near it to strengthen the defences at this point. In crusader castles, there is often a gate tower, with the gate passage leading through the base of the tower itself. In European castles, it is more common to have flanking towers on either side of the gatehouse.
ZITERDES offers the opportunity to change the spires of the town or fortified towers. This way, you can choose between bricked attachements with tin or frameworked attachements with a shingle roof.