This exhibition examines the historic use and artistic treatment of walls over the centuries—whether they are made of stone, steel, sand or wire. The exhibition brings together 67 makers from around the world with 132 images, the earliest from 1897 and the most recent from July 2019. There also is a 26-minute documentary film by award-winning director Jeremiah Zagar that accompanies the exhibition. The space is divided into six sections—Delineation, Defense, Deterrent, The Divine, Decoration, and The Invisible—with each section anchored by a central photo essay. This photography exhibition was made possible by Wallis Annenberg and the Annenberg Space for Photography, Los Angeles, California.