Who could bring together nudists, babies, socialites, circus performers, and drag queens better than Diane Arbus? Born in New York in 1923, she studied photography with Alexey Brodovitch and Lisette Model before she made her mark as one of the defining artists of the 20th century. Arbus never shied away from the bizarre, but rather captured diverse and eccentric populations of postwar America. To do so, she had to get personal, going into the homes and private spaces of strangers to portray them where they felt most themselves. That intimacy is the focus of this exhibition at David Zwirner, which collects 45 photographs taken in New York, New Jersey, California, and London between 1961 and 1971. Titled “Sanctum Sanctorum,” a phrase meaning “a sacred room or inner chamber” or “a place of inviolable privacy,” it shows Arbus at her most perceptive, intelligent, and brave as she moves through those close quarters without ever casting anything remotely close to judgment. —Jeanne Malle