This is one of our most fascinating categoriers, because ZITERDES scored with its manufactoring technique and its unique structure hard foam. The castles and fortresses impress with their sturdiness and size, even in the look. At this point, we have a invincible price and a huge amount of playable areas, such as walls, battlements, towers and gates, which have to be defended. The appellation fortress is a hypernym for a place, which is strengthen by fortifications. Furthermore, a fortress titels in the modern area, an independent, military fortification of permanent construction, which is made for the protection against rival fire guns and the defensive usage through the own force. The fortresses have been build up since the 15th century as a result of the sortie of guns, and were common since the middle of the 20th century. They had the function to serve as border or shore security, compose as offensive from the origin or accommodate withdrawing armies. Furthermore, some fortresses were used as adminstrative center, jail or storage of governmental bank reserves or precious metals.