WOW Squared
http://gizmodo.com/5015855/architect-secretly-builds-epic-scavenger-hunt-into-nyc-apartment
I was a little confused at first as I went thru the gallary of photos and then I realised that many of them are showing 2 pics.. the closed object and the opened puzzle. The articall is on the first page and continues under under the picture.
I SOOOO want something like this.
(PS: Biggles... this is soooooo you!)