Staircase, Wood Tread, and Metal Railing The husband’s home office is furnished by a Toot lounge chair by Piero Lissoni for Cassina, a vintage Desk BO69 by Finn Juhl, and a Swivel chair by Hans Wegner. A custom picture rail, filled with family photos, is made of bands of wood that keep contents in place.  Photo 9 of 14 in What’s the Twist Behind This Home’s Sinuous Staircase? Ordinary Plywood