- In 2015, 19.7 million tourists visited Japan
- Whether bright and modern or creaky and old, all public baths cost ¥450
- Travelers can buy a single card to ride all trains and buses
(CNN)The surge in international tourists heading for Japan shows no signs of slowing. In 2015, 19.7 million tourists visited the country -- an all-time high that's partly attributed to the city's successful bid for the 2020 Olympics.