Austrian artist Klemens Torggler has reinvented the traditional door with his latest creation, Evolution Door. Instead of a single panel within a frame, Torggler's design consists of four triangular sections that fold over themselves mid pivot, and then straighten back into shape. The artist has been working on the concept for several years, and this final result is extremely striking.
In terms of functionality, there are pivots at both the top and bottom of the frame, with only one hinge that sits in the middle. To close the door you simply pull gently at mid point where the two pieces join. The system that the door utilises, Torggler has titled Drehplattentur, or 'flip panel door'.