Billing itself as "one of the most important historical restaurants of Japan," this quiet hilltop retreat is Nagasaki's most prestigious dining room. Dishes are served as kaiseki (multicourse meals) or shippoku (an elaborate course blending Asian and European elements). A lunchtime bento box is ¥5,200, while full dinners start at ¥13,800 and head skyward. The interior wooden beams date to 1618, when Kagetsu was reputedly a high-class brothel. According to another local legend, Meiji Restoration leader Ryoma Sakamoto once took a chunk out of a wooden pillar with his sword during a brawl, leaving a still visible gash.