While doors exist for reasons, these preview doorknobs are pretty fantastic. They feature bi-directional viewing! Johnny Strategy at Spoon & Tomago details:
In conjunction with Design Tide Tokyo, architect Hideyuki Nakayama - a protégé of Toyo Ito - has teamed up with UNION, a manufacturer of door handles and levers, to create a glass globe doorknob. As you approach the doorknob you catch a glimpse of what appears to be another world, waiting for you to enter and join, but in fact is a reflection of the room on the other side of the door.
[via Gizmodo]
