COVER—Vincent J. Musi; 1—Vincent J. Musi; 3—(clockwise from top left) Dafna Gazit, Israel Antiquities Authority, Shaanxi Academy of Archaeology, Courtesy Jesse Martin, Courtesy Filip Ondrkál, National Trust Images/Stephen Haywood; 4—Azoor Photo Collection/Alamy Stock Photo; 6—Larry Horricks/Netflix; 10—loraks/iStock, National Trust/Mike Calnan, National Trust Images/Stephen Haywood; 11—Courtesy Jesse Martin (2); 12—(clockwise from top left) sharpphotography.co.uk/Wikimedia Commons, Shadreck Chirikure, National Museum of Namibia, Windhoek; 14—Dafna Gazit, Israel Antiquities Authority, FAS Heritage; 15—James Fairbairn, Oxford Archaeology East (3); 16—Shaanxi Academy of Archaeology (2), Courtesy Filip Ondrkál; 18—Photography by A. Stanford (2), Courtesy of Nevzat Çevik; 19—© OREA ÖAW; 20—Mark Phillips/Alamy Stock Photo, Zoonar GmbH/Alamy Stock Photo; 22—(clockwise from top left) Drawing by Y. Lisyansky; courtesy of the U.S. National Park Service, Sitka National Historical Park, Courtesy of Villa Adriana and Villa D’Este, Simon-Pierre Gilson,…