Floor-to-ceiling bookshelves are lovely, and can act as a robust focal point in any home. But accessing the high shelves can be a problem. The common side-kick has always been ladders, which can also add character and charm. But for smaller homes like in Japan they can be a nuisance, occupying too much space for not enough usage. But Japanese architect Shinsuke Fujii came up with a simple, yet brilliant solution that solves another problem too: earthquake safety.