[Best Indoor Things to do in Tokyo with Kids] When traveling to Tokyo, Japan during a rainy season, you can still enjoy your day at those indoor places. Our list of the best indoor things to do in Tokyo with kids will help you find a place to take your children to let out some energy. The list also helps to find things to do when staying out too long is not really ideal for kids. Science museums, art museums, aquariums and more! Read to find the best things to do in Tokyo with kids for you!