Ключевые слова: april, attractions, blue sky, boat, bridge, cherry, city, copy space, downtown, enjoying seeing cherry blossom, high speed road, houseboat, japan, landmark, landscape, popular spots, river, riverside, said bridge, seasonal, ship, sky tree, spring, street arts, sumida river, sunny, tokyo, tokyo metropolitan government, tokyo sky tree, tour boat, tourism, tourist boats, tourist destination, tower, traffic, waters edge,