I couldn't help but think of that Shari Lewis classic, and now "this is a stair that never ends" is stuck in my ear. Dwell shows The Coil, a house in Tokyo designed by Akihisa Hirata.. Every space in the house is essentially a stair landing set among the 44 twisting wide risers. It's more stair than house.
The house is 921 square feet on a 15 foot wide lot. How do they squeeze a family in to such a small area, particularly when a good portion of it is taken up by stairs? It is a different way of living, that is worth examining for those who live in small spaces. Homeowner Ryo Sugiura explains in Dwell:
“[This] fits our ‘futon lifestyle,’” says Ryo, explaining that the family freely spreads out their mattresses on any of the large landings at night. But during the day, after the bedding is stowed in a deep closet (one of two large storage areas tucked beneath Coil’s giant stairs), the spaces become an informal study for Sakura and Ryo or an impromptu play area for Gen and Ran, ages six and three.
That idea of a "Futon Lifestyle" is interesting. Japanese style Tiny House, anyone? More in Dwell.