Suanbo

Suanbo Hot Spring in North Chungcheong province is one of South Korea's most historically significant and mineralogically distinctive thermal resorts, where lithium-, radon-, and bicarbonate-rich water emerges at 53°C — the hottest spring on the Korean mainland. Used within a long thermal tradition since the Goryeo dynasty and developed as a resort during the Japanese colonial period, Suanbo's waters are traditionally associated with relaxation and bodily comfort. The spa town retains a nostalgic mid-20th century character, making it a favourite for those seeking authentic Korean thermal bathing.