Reversible Destiny Lofts - Tokyo - Japan - 2005 - Shusaku Arakawa and his creative partner, poet Madeline Gins - Small apartments complex built in 2005 in the Tokyo suburb of Mitaka - this is some very cool architectural design, I love it!
The hanging Spirals staircase. This design makes sweeping under the stairs easy! A hanging double spiral staircase is part of the Didden Village project in Rotterdam. There are two such staircases; the other is a single spiral.