Sky Ranch from Miller Hull

Sky Ranch from Miller Hull...I've posted about this house once before, but I found these images directly on the Architect's website.  We are contemplating leaving the cabinets in my new bathroom unpainted and unstained, so all those great built-ins and cabinets are perfect inspiration.  Plus, it's just an overall great space.

On that note, anyone have any good recomendations on what to use to seal  and protect the wood?