Guanziling Hot Spring (Chinese: 關子嶺溫泉; pinyin: Guānzilǐng Wēnquán; Wade–Giles: Kuan1-tzu1-ling3) is a hot spring in Baihe District, Tainan, Taiwan. The hot spring was discovered by the Japanese troops in the area and it was named Taiwan's No. 1 Hot Spring in 1920.[1] The hot spring is located at an altitude of 270 meters above sea level. This rare spring releases methane, which has been burning constantly for around three centuries.