First seen in Medieval Germany (13th Century), The Chamber Gate was a form of gateway system incorporated into Castle or Fortification Gates or Entrances – as a type of additional defensive measure. Often called a “False Room”, The Chamber Gate was an attached room which was used to entrap an Enemy who may breach an Entrance to a Structure. Most Chamber Gates did not use “Murder Holes” or related defensive means. The did feature false walls with Slit openings through which Archers or Musketmen could fire into a “bottlenecked” Enemy that had penetrated The Entrance. Sometimes, Chamber Gates were designed to create a “False Entrance” (which actually did not lead into a Fortress. Many such could be constructed to confuse an attacking Enemy.