I'm not usually a huge fan of modern architecture - obviously, given the theme of this site - but the material and the flowing organic quality of this door really struck me. Designed by Matharoo Associates in Surat, India, it is installed in a private residence.

At 5.2m high and 1.7m wide, the door is comprised of 40 sections of 254mm-thick Burma teak. Each section is carved so that the door integrates 160 pulleys, 80 ball bearings, a wire-rope and a counter weight hidden within the single pivot.

Stacked one above the other in the closed position, each plank can then rotate by a simple push causing the door to reconfigure into a sinusoidal curve.

Despite only submitting the door for the competition, the accompanying 1700m² showpiece house features a number of similarly inventive components, including a light-emitting onyx wall, which also caught the judges attention.