Japanese design studio UID Architects designed a ‘Pit House’ in the Okayama prefecture for a single family of three. Many living functions in a space extends the exterior into the interior. The private areas are lifted off the ground in a solid box clad in cedar planks and covered in structural plywood panels on the inside with cherry floorboards. The primary structure consists of concentric concrete inhabitable cylinders in a sunken circular footprint. Many separate levels contain small gardens.