MARKSBURG
Dining room with a medieval toilet [i.e. a hole in the wall, below left] and a narrow entrance to the chapel to allow the occupmants of the castle pray without the hindrance of soldiers with gigantic swords [below right].
Wine making in the castle
View from the castle
Battery with cannons and projectiles for defense
Plants for food, for medicine and for witchcraft [according to the sign, below]
... and finally the Armoury. Here are a few examples of the collection from different eras including 21st. That helmet was more than 10 lbs.