I've always loved architecture where the structure becomes the finished space. In other words, the structure is not hidden and covered up with another laminate of flooring, drywall, wood etc. That's one of the reasons I have always loved the old single wall plantation architecture. In these houses, the actual structure of the exterior siding is the interior wall that just gets painted and you're done. Take a look at the itHouse's aluminum structure - one of the first things to go up after the footings and what you see here, you will see forever exposed in the house.
Photos Courtesy of Patricia Parinejad Project by tkithouse.com