Niiwa Onsen is a thermal facility in Chongqing, China, a southwestern metropolis on the Yangtze River. The water sits around 40°C, with an indoor bath, an outdoor bath and a sauna.
Insider tip — Chongqing on the Yangtze is China's mountainous mega-city, its monorails threading through skyscraper canyons. Niiwa Onsen draws geothermal water from the Sichuan Basin geological formations — a hot spring experience inside one of Asia's most dramatic urban landscapes.