"The Cellars" is a comprehensive non-fiction book that explores the significant role of the Keller family in southern German Baroque. Under the leadership of Joachim Hennze, the history of this family of craftsmen and builders, who worked for the Teutonic Order over three generations from 1600 to 1675, is illuminated. The book offers a deep insight into the architectural developments and cultural changes that took place in Germany after the Thirty Years' War. It not only presents impressive structures such as churches and residences but also the diverse designs for residential and administrative buildings that have been preserved in various regions to this day. Readers thus gain a multifaceted view of Baroque architecture and the associated societal currents.