Otakus were able to replicate (in 3D) the interiors of some anime characters' residences such as the ones in The Melancholy of Haruhi Suzumiya, Kannagi, K-On!, and Toradora.The renditions are 'based on obsessive observations of the anime and some evident architectural ability.'
1. Yuki Nagato (from The Melancholy of Haruhi Suzumiya)
2. Nagi (Kannagi)
3. Taiga (Toradora)
4. Yui (K-On)
More pictures at source
Accurate? Well, that's another question. Either way, you gotta hand it to these people--they got dedication.