This infinitely triply periodic staircase matrix is structured on the 8-srs structure, the 8-fold highly symmetric intergrowth of 8 equal-handed gyroid graphs.
If you scale it up by a factor of 43 you could live in it.
See here for video: https://youtu.be/PqjJ1DA_TGw
See here for stable download: https://social.thangs.com/m/596411
To build your own matrix, start with the “Stop Stairing Translation Unit” and pattern it in any direction at an interval of 50mm. Be sure to connect the staircases somehow or you’ll end up with disconnected segments.
The “Stop Stairing Fully Supported 2 x 2 Matrix” pictured above is a fully supported 2 x 2 x 2 matrix of the “Stop Stairing Translation Unit.” The floating staircase segments in the top corners have been removed. No additional supports required, but brim is advised.
See here for some “Ultimate Pasta” also structured on the 8-srs: https://www.thingiverse.com/thing:4763849
See here for more information and a really cool video about 8-srs: http://gerdschroeder-turk.org/2018/12/08/snow-flakes-on-kelvins-polyhedra-thomas-pigeons-artistic-take-on-the-8-fold-gyroid-topology/
