Tangangzi Hot Spring Spa, northeast of the city centre, has been receiving visitors for over a thousand years. The mineral springs produce hot water rich in radium and other compounds that give the mud baths here their particular character — a regional specialty distinct from the straightforward hot pools found at other northeastern Chinese thermal spas.
The current facilities are modern, with multiple spa buildings offering various treatments, but the source water is the same that has been drawing people to this spot since the Tang dynasty. The mud bath experience is the local recommendation: the volcanic sand mixed with spring water is applied in thick coatings and left to dry, and the sensation is as odd as it sounds and apparently beneficial. The hot springs make a logical add-on to a day visit to Qianshan National Park, which is in the same general direction from the city centre.