Filled with amazing full-color and historical images, readers will explore the mysteries beneath Seattle, China, France and more! Underground Cities dives into the origins, construction, and purpose of these sites. Historical, geographical, and cultural context encourages kids to learn about the events, people, and findings from each buried city. Aligned to Common Core standards and correlated to state standards. A&D Xtreme is an imprint of Abdo Publishing, a division of ABDO.