The first room you happen upon down the enfilade is a sitting room. Harmon doors, flung open, rest nearly invisible in the deep door frame, an architectural allowance that makes room for closet space along the same wall (its doors also made possible by neatly minimalist Harmon hinges). A large-scale photograph by Steven Klein of a horse's mane, leaning in the hallway, was a gift from Linda Fargo—the fashion director at Bergdorf Goodman | archdigest.com