Occupying a former geisha house in a Kagurazaka back street, Tenko has a beautiful traditional setting and a serene atmosphere. The tempura is exquisite - succulent morsels of seasonal seafood and vegetables covered in a light, almost greaseless coating and paired with plain sea salt for dipping. Prix-fixe menus are Y17,000-21,000 for dinner and Y2500-5000 for lunch.