We took this dodgy staircase up, before we discovered a stone staircase at the other side of the castle. The steps and floors make squeeking sounds and it feels as if the hardly can take the weight on of a person.
Klein Bottle House by McBride Charles Ryan | Dezeen
The walls of this house in Australia by architects McBride Charles Ryan have origami-like facets and folds. Located on the south coast, the holiday home is named after the Klein Bottle, which is the mathematical term for a surface with an indefinable left, right, top or bottom. Rooms angle around a central courtyard and step upwards