Office, Desk, and Study Room Type Materials and craft play a significant role inside and out. The columns are Type 316 stainless steel – almost nautical grade. Floors and walls are walnut; windows are mahogany.  Photo 7 of 11 in An Atypical Tree House

An Atypical Tree House

7 of 11

Materials and craft play a significant role inside and out. The columns are Type 316 stainless steel – almost nautical grade. Floors and walls are walnut; windows are mahogany.