The intricate balustrade of this staircase incorporates wooden fretwork panels and ball top newel posts inspired by classical and historic designs. The polished wood floor has been crafted from wide plank solid walnut boards with a deep rich stain. Interior Architecture by Brian O'Keefe Architect, PC, with Interior Design by Marjorie Shushan. Featured in Architectural Digest. Photo by Liz Ordonoz.