Now this is an entryway! Designed by the architectural firm Matharoo Associates, the Curtain Door is most definitely a door like no other I’ve seen. The massive door is made of 40 sections of thick Burma teak and sits between the entrance’s concrete walls. Each section has been carved to incorporate 160 pulleys, 80 ball bearings, one wire rope, and a hidden counterweight.

When closed, the door just looks like a huge, horizontally slatted wood door. Push on the door and the wood feathers out into a beautiful curve, much like a curtain would.