Mandarin Bar at the Mandarin Oriental

Despite its singularly spectacular views, this is one of the rare rooftop bars that does not charge a cover. Dually unusual is its almost entirely female staff of bartenders. (Bartending is still a heavily male-dominated profession in Japan.) Like the food, cocktails are seasonal and full of regional specialties that call for ingredients like yuzu, sakura (cherry blossom) and sparkling sake. (Mandarin Bar: 中央区日本橋室町2-1-1, 37F)