Ever since I read James R. Gaines’s Evening in the Palace of Reason: Bach Meets Frederick the Great in the Age of Enlightenment, I’ve been fascinated by the enigmatic Prussian monarch. Frederick the Great’s complex legacy—his influence on music, philosophy, and military strategy during the Enlightenment—continues to captivate me. His architectural vision lives on in places like Sanssouci, his intimate rococo retreat in Potsdam, and the grand Neues Palais, a symbol of Prussia’s rising power built to impress visiting dignitaries.